SlideShare uma empresa Scribd logo
1 de 16
Baixar para ler offline
Unit-1
Objective: To acquire the knowledge about the computers and
input and output devices and Operating system Computer
concepts
Introduction to computers – Definition – Advantages &
dis-advantages – classification of computers
(Desktop, Laptop, Notepad) – hardware features & uses –
Defining hardware – components of computer – block diagram
of computer – Primary storage concept – secondary storage
devices – input/output Devices – Software concepts -
Operating System (O/S) – MS DOS, Windows –
2000/Xp, Unix) Language classification ( Higher
level, lower level, Assembly) – Compiler and interpreter.
Introduction to Computer
Introduction
The word Computer comes from the word “Compute”
which means “Calculate”. So a Computer normally as a
calculating device considered. Then can Perform Arithmetic
operations enormous speed.
Meaning
1. Computer is an electronic device. Computer is a
designed to automatically accept and store input data
manipulates them and produces out put through step-by-step
instructions which is stored in a program. Thus a
programmable machine is called computer.
2. Computer is an Electronic device.
Fundamental Entities of a
computer
Hardware
Meaning :
The hardware of
a computer consists of
the electronic
components and electro
mechanical that
comprises physical entity
of the devices.
The physical
components of the
computer are called as
hardware. Example: Hard
disk, floppy disk, mother
board, RAM etc.
Software
Meaning:
The software consists of the
instructions and the data computer
manipulates, to perform various data
processing tasks.
The set of programs or
instructions written by the user is called
as software.
Example: Tally, Ms-Office, Java, Visual
basic, Oracle etc.
Classification of software:
System software - Ex: MS-DOS
Application software
Utility software
Unit i (part1)  b.sc
Primary storage concept – secondary
storage devices
STORAGE
DEVICES
Primary
Storage device
RAM ROM
PROM EPROM EEPROM
Secondary
Storage Device
Floppy disk Hard disk
Primary Storage
Meaning :
Primary storage is usually referred to Random Access Memory (RAM), because it is
possible to randomly select and use any location of this memory to directly store and retrieve data and
instructions.
RAM
RAM – Random Access Memory
It is also referred to as read/write memory because information can be „read‟ from RAM chip and can
also be „written‟ into it.
ROM
ROM – Read Only Memory is one in which information in permanently stored. The
information from the memory can only be read and it is not possible to write fresh information into it.
PROM
A commonly used version is the programmable ROM or PROM, which is supplied in blank
form by the manufacturer.
EPROM
It is possible to erase information stored in an EPROM.
EEROM:
Instead of ROM, many devices now incorporate EEPROM‟s (Electrically Erasable PROM)
which can be easily reprogrammable by the application of a small voltage.
Secondary Storage devices
Meaning:
Secondary storage large volume of data on a permanent basis which can be partially transferred
to the primary storage as and when required for processing. It is commonly used for “backing up data”.
Floppy Disk:
“Floppy” disk drives allow you to save work on small disks and take the data with you.
Speed : Very slow.
Capacity : Normally 1.44 Mbytes.
Cost : Very cheap.
Hard disk
Hard disk drives are an internal, higher capacity drive which also stores the operating system
which also stores the operating system which runs when your power on the computer.
Speed : very fast
the speed of a hard disk is often quoted as “average access time” speed, measured in milliseconds. The
smaller this number the faster the disk.
Capacity : Enormous Often 40/80 Gigabytes. A Gigabyte is equivalent to 1024 Megabytes.
Cost : Hard disks costs are falling rapidly and normally represent the cheapest way of storing data.
Input Devices
Input device is any machine that feeds data into
computer. For example a keyboard is an input device, whereas
a display monitor is an output device. A keyboard and mouse
are the standard way to interact with the computer.
There are as follow as below:
Mouse
Keyboard
Tracker balls
Scanners
Touch pads
Light pads and
Joy sticks
Input/output Devices
Mouse: The mouse used to ‘drive’ Microsoft windows.
Keyboard :
The keyboard is still the commonest way of entering information into a computer.
Tracker balls:
An alternative to the traditional mouse and often used by graphic designers.
Scanners
A scanner allows you to scan printed material and convert it into a file format that
may be used within the PC.
Touch pads:
A device that lays on the desktop and responds to pressure.
Light Pens
Light Pens used to allow users to
point to areas on a screen.
Joysticks
Many games require a joystick for
the proper playing of the game.
Meaning:
Output is anything that comes out of a computer. Output can
be meaningful information and it can appear in a variety of forms – as a
binary numbers, as pictures and as printed pages.
The monitor (the screen) is how the computer sends
information back to us. A printer is also an output device.
There are as follow as below:
Monitor or DVU (Display Visual Unit)
Plotters
Speakers
Speech
Speech synthesizers
Printers
OUTPUT DEVICES
Monitor:
A Monitor is other wise called as DVU i.e. Display
Visual Unit.
Monitor is another term for the display screen. The
screen is closely linked with the keyboard so that whatever
characters are typed will be displayed.
Plotters
A plotter is an output device similar to a printer, but
normally allows you to print larger images.
Speakers
A Speakers enhances the value of educational and
presentation products.
Speech synthesizers
A speech synthesizer gives you the ability to not only to display text
on a monitor but also to read the text to you.
Printers
In large organizations laser printers are most commonly
used due to the fact that they can print very fast and give a very much
quality output.
There are many different types of printers. There are as follow as below:
Character Printers
Daisy Wheel Printer
Line Printer
Dot Matrix Printer
Inkjet Printer
Laser printers etc.
INPUT & OUTPUT DEVICES

Mais conteúdo relacionado

Mais procurados

Computer Hardware Basics
Computer Hardware BasicsComputer Hardware Basics
Computer Hardware BasicsMark Rotondella
 
Computer hardware component. ppt
Computer hardware component. pptComputer hardware component. ppt
Computer hardware component. pptNaveen Sihag
 
Basic Computer Concepts
Basic Computer ConceptsBasic Computer Concepts
Basic Computer ConceptsReynz Anario
 
Computer Hardware
Computer HardwareComputer Hardware
Computer Hardwarenitinmote
 
Computer for class 6th
Computer for class 6thComputer for class 6th
Computer for class 6thRuchi Gupta
 
Computers Hardware and Software ( Modern Technology)
Computers Hardware and Software ( Modern Technology)Computers Hardware and Software ( Modern Technology)
Computers Hardware and Software ( Modern Technology)Shahzaib Mahesar
 
Difference between hardware and  software computer hardware vs software
Difference between hardware and  software   computer hardware vs softwareDifference between hardware and  software   computer hardware vs software
Difference between hardware and  software computer hardware vs softwareSwapan Das
 
Introduction to computer hardware
Introduction to computer hardwareIntroduction to computer hardware
Introduction to computer hardwareK. A. M Lutfullah
 
My presentation on 'computer hardware component' {hardware}
My presentation on 'computer hardware component' {hardware}My presentation on 'computer hardware component' {hardware}
My presentation on 'computer hardware component' {hardware}Rahul Kumar
 
Parts Of The Computer
Parts Of The ComputerParts Of The Computer
Parts Of The ComputerAaron Abraham
 
Primary and secondary Storage devices
Primary and secondary Storage devicesPrimary and secondary Storage devices
Primary and secondary Storage devicesMuhammad Usman
 
What is Computer | Computer Full Form | Computer Definition
What is Computer | Computer Full Form | Computer DefinitionWhat is Computer | Computer Full Form | Computer Definition
What is Computer | Computer Full Form | Computer Definitiondmir3304
 
Types and components of computer system
Types and components of computer systemTypes and components of computer system
Types and components of computer systemmkhisalg
 
Input output ports and connectors
Input output ports and connectorsInput output ports and connectors
Input output ports and connectorsbhardwaj1992
 
Memory / Storage Devices
Memory / Storage DevicesMemory / Storage Devices
Memory / Storage DevicesGECE BADIN
 

Mais procurados (20)

Computer Hardware Basics
Computer Hardware BasicsComputer Hardware Basics
Computer Hardware Basics
 
Internal hardware
Internal hardwareInternal hardware
Internal hardware
 
Computer hardware component. ppt
Computer hardware component. pptComputer hardware component. ppt
Computer hardware component. ppt
 
Basic Computer Concepts
Basic Computer ConceptsBasic Computer Concepts
Basic Computer Concepts
 
Computer Hardware
Computer HardwareComputer Hardware
Computer Hardware
 
Computer for class 6th
Computer for class 6thComputer for class 6th
Computer for class 6th
 
Computers Hardware and Software ( Modern Technology)
Computers Hardware and Software ( Modern Technology)Computers Hardware and Software ( Modern Technology)
Computers Hardware and Software ( Modern Technology)
 
Basic of computer
Basic of computerBasic of computer
Basic of computer
 
Difference between hardware and  software computer hardware vs software
Difference between hardware and  software   computer hardware vs softwareDifference between hardware and  software   computer hardware vs software
Difference between hardware and  software computer hardware vs software
 
Introduction to computer hardware
Introduction to computer hardwareIntroduction to computer hardware
Introduction to computer hardware
 
Computer Hardware
Computer HardwareComputer Hardware
Computer Hardware
 
System unit components
System unit componentsSystem unit components
System unit components
 
My presentation on 'computer hardware component' {hardware}
My presentation on 'computer hardware component' {hardware}My presentation on 'computer hardware component' {hardware}
My presentation on 'computer hardware component' {hardware}
 
Parts Of The Computer
Parts Of The ComputerParts Of The Computer
Parts Of The Computer
 
Components of computer
Components of computerComponents of computer
Components of computer
 
Primary and secondary Storage devices
Primary and secondary Storage devicesPrimary and secondary Storage devices
Primary and secondary Storage devices
 
What is Computer | Computer Full Form | Computer Definition
What is Computer | Computer Full Form | Computer DefinitionWhat is Computer | Computer Full Form | Computer Definition
What is Computer | Computer Full Form | Computer Definition
 
Types and components of computer system
Types and components of computer systemTypes and components of computer system
Types and components of computer system
 
Input output ports and connectors
Input output ports and connectorsInput output ports and connectors
Input output ports and connectors
 
Memory / Storage Devices
Memory / Storage DevicesMemory / Storage Devices
Memory / Storage Devices
 

Semelhante a Unit i (part1) b.sc

102 Computer Parts and Basic Function.pdf
102 Computer Parts and Basic Function.pdf102 Computer Parts and Basic Function.pdf
102 Computer Parts and Basic Function.pdfshielamarie55
 
The fundamentals of computer renew
The fundamentals of computer renewThe fundamentals of computer renew
The fundamentals of computer renewRam Pukar
 
Fundamentalsofcomputer
FundamentalsofcomputerFundamentalsofcomputer
FundamentalsofcomputerRam Pukar
 
Cte i computer_parts
Cte i computer_partsCte i computer_parts
Cte i computer_partsGlenn Barredo
 
Power Point Lesson 02
Power Point Lesson 02Power Point Lesson 02
Power Point Lesson 02Nasir Jumani
 
Cte i computer_parts
Cte i computer_partsCte i computer_parts
Cte i computer_partsNomjit
 
002_Fundamentals of Computer.pdf
002_Fundamentals of Computer.pdf002_Fundamentals of Computer.pdf
002_Fundamentals of Computer.pdfMarioCaday2
 
Computer systems for school kids
Computer systems for school kidsComputer systems for school kids
Computer systems for school kidsRajesh Tivrekar
 
Fundamentals of Computer.pptx
Fundamentals of Computer.pptxFundamentals of Computer.pptx
Fundamentals of Computer.pptxZORAIZ HAIDER
 
Basic_ComputerS1.ppt
Basic_ComputerS1.pptBasic_ComputerS1.ppt
Basic_ComputerS1.pptcharanjit9
 
_What is Hardware_ ,details, perform(2023) .pdf
_What is Hardware_ ,details, perform(2023) .pdf_What is Hardware_ ,details, perform(2023) .pdf
_What is Hardware_ ,details, perform(2023) .pdfRohitRoshanBengROHIT
 

Semelhante a Unit i (part1) b.sc (20)

102 Computer Parts and Basic Function.pdf
102 Computer Parts and Basic Function.pdf102 Computer Parts and Basic Function.pdf
102 Computer Parts and Basic Function.pdf
 
The fundamentals of computer renew
The fundamentals of computer renewThe fundamentals of computer renew
The fundamentals of computer renew
 
Fundamentalsofcomputer
FundamentalsofcomputerFundamentalsofcomputer
Fundamentalsofcomputer
 
Computer Organization
Computer OrganizationComputer Organization
Computer Organization
 
Computer Organization
Computer OrganizationComputer Organization
Computer Organization
 
Chapter 2.pptx
Chapter 2.pptxChapter 2.pptx
Chapter 2.pptx
 
Cte i computer_parts
Cte i computer_partsCte i computer_parts
Cte i computer_parts
 
Basic Computer Parts
Basic Computer PartsBasic Computer Parts
Basic Computer Parts
 
Cte i computer_parts
Cte i computer_partsCte i computer_parts
Cte i computer_parts
 
Power Point Lesson 02
Power Point Lesson 02Power Point Lesson 02
Power Point Lesson 02
 
Cte i computer_parts
Cte i computer_partsCte i computer_parts
Cte i computer_parts
 
002_Fundamentals of Computer.pdf
002_Fundamentals of Computer.pdf002_Fundamentals of Computer.pdf
002_Fundamentals of Computer.pdf
 
Computer systems for school kids
Computer systems for school kidsComputer systems for school kids
Computer systems for school kids
 
Chapter 2.pptx
Chapter 2.pptxChapter 2.pptx
Chapter 2.pptx
 
Fundamentals of Computer.pptx
Fundamentals of Computer.pptxFundamentals of Computer.pptx
Fundamentals of Computer.pptx
 
Lec 2
Lec 2Lec 2
Lec 2
 
Basic_ComputerS1.ppt
Basic_ComputerS1.pptBasic_ComputerS1.ppt
Basic_ComputerS1.ppt
 
Basic of computers
Basic of computersBasic of computers
Basic of computers
 
Computer basics
Computer basicsComputer basics
Computer basics
 
_What is Hardware_ ,details, perform(2023) .pdf
_What is Hardware_ ,details, perform(2023) .pdf_What is Hardware_ ,details, perform(2023) .pdf
_What is Hardware_ ,details, perform(2023) .pdf
 

Mais de Hepsijeba

MIS Q & A for III B.Sc C & HA
MIS Q & A for III B.Sc C & HAMIS Q & A for III B.Sc C & HA
MIS Q & A for III B.Sc C & HAHepsijeba
 
II B.sc 2011
II B.sc 2011II B.sc 2011
II B.sc 2011Hepsijeba
 
I B.Sc C & HA - Basics of CS
I B.Sc C & HA - Basics of CSI B.Sc C & HA - Basics of CS
I B.Sc C & HA - Basics of CSHepsijeba
 
II B.Sc Computer Applications Q & A
II B.Sc Computer Applications Q & AII B.Sc Computer Applications Q & A
II B.Sc Computer Applications Q & AHepsijeba
 
I B.Sc CS questions & answers
I B.Sc CS questions & answersI B.Sc CS questions & answers
I B.Sc CS questions & answersHepsijeba
 
Ms office 2003
Ms office 2003Ms office 2003
Ms office 2003Hepsijeba
 
MIS Notes - III B.Sc C & HA
MIS Notes - III B.Sc C & HAMIS Notes - III B.Sc C & HA
MIS Notes - III B.Sc C & HAHepsijeba
 
Unit III - Basics of Computer Science
Unit III - Basics of Computer ScienceUnit III - Basics of Computer Science
Unit III - Basics of Computer ScienceHepsijeba
 
Unit II - MS DOS Commands
Unit II - MS DOS CommandsUnit II - MS DOS Commands
Unit II - MS DOS CommandsHepsijeba
 
Unit i (part2) b.sc
Unit i (part2)   b.scUnit i (part2)   b.sc
Unit i (part2) b.scHepsijeba
 

Mais de Hepsijeba (11)

MIS Q & A for III B.Sc C & HA
MIS Q & A for III B.Sc C & HAMIS Q & A for III B.Sc C & HA
MIS Q & A for III B.Sc C & HA
 
II B.sc 2011
II B.sc 2011II B.sc 2011
II B.sc 2011
 
I B.Sc C & HA - Basics of CS
I B.Sc C & HA - Basics of CSI B.Sc C & HA - Basics of CS
I B.Sc C & HA - Basics of CS
 
II B.Sc Computer Applications Q & A
II B.Sc Computer Applications Q & AII B.Sc Computer Applications Q & A
II B.Sc Computer Applications Q & A
 
I B.Sc CS questions & answers
I B.Sc CS questions & answersI B.Sc CS questions & answers
I B.Sc CS questions & answers
 
Lan vs Man
Lan vs ManLan vs Man
Lan vs Man
 
Ms office 2003
Ms office 2003Ms office 2003
Ms office 2003
 
MIS Notes - III B.Sc C & HA
MIS Notes - III B.Sc C & HAMIS Notes - III B.Sc C & HA
MIS Notes - III B.Sc C & HA
 
Unit III - Basics of Computer Science
Unit III - Basics of Computer ScienceUnit III - Basics of Computer Science
Unit III - Basics of Computer Science
 
Unit II - MS DOS Commands
Unit II - MS DOS CommandsUnit II - MS DOS Commands
Unit II - MS DOS Commands
 
Unit i (part2) b.sc
Unit i (part2)   b.scUnit i (part2)   b.sc
Unit i (part2) b.sc
 

Último

P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdfP4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdfYu Kanazawa / Osaka University
 
Easter in the USA presentation by Chloe.
Easter in the USA presentation by Chloe.Easter in the USA presentation by Chloe.
Easter in the USA presentation by Chloe.EnglishCEIPdeSigeiro
 
General views of Histopathology and step
General views of Histopathology and stepGeneral views of Histopathology and step
General views of Histopathology and stepobaje godwin sunday
 
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptxSandy Millin
 
The Stolen Bacillus by Herbert George Wells
The Stolen Bacillus by Herbert George WellsThe Stolen Bacillus by Herbert George Wells
The Stolen Bacillus by Herbert George WellsEugene Lysak
 
3.21.24 The Origins of Black Power.pptx
3.21.24  The Origins of Black Power.pptx3.21.24  The Origins of Black Power.pptx
3.21.24 The Origins of Black Power.pptxmary850239
 
The basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptxThe basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptxheathfieldcps1
 
Quality Assurance_GOOD LABORATORY PRACTICE
Quality Assurance_GOOD LABORATORY PRACTICEQuality Assurance_GOOD LABORATORY PRACTICE
Quality Assurance_GOOD LABORATORY PRACTICESayali Powar
 
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxPISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxEduSkills OECD
 
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptxClinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptxraviapr7
 
HED Office Sohayok Exam Question Solution 2023.pdf
HED Office Sohayok Exam Question Solution 2023.pdfHED Office Sohayok Exam Question Solution 2023.pdf
HED Office Sohayok Exam Question Solution 2023.pdfMohonDas
 
Human-AI Co-Creation of Worked Examples for Programming Classes
Human-AI Co-Creation of Worked Examples for Programming ClassesHuman-AI Co-Creation of Worked Examples for Programming Classes
Human-AI Co-Creation of Worked Examples for Programming ClassesMohammad Hassany
 
Diploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdfDiploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdfMohonDas
 
AUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptxAUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptxiammrhaywood
 
Benefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive EducationBenefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive EducationMJDuyan
 
CHUYÊN ĐỀ DẠY THÊM TIẾNG ANH LỚP 11 - GLOBAL SUCCESS - NĂM HỌC 2023-2024 - HK...
CHUYÊN ĐỀ DẠY THÊM TIẾNG ANH LỚP 11 - GLOBAL SUCCESS - NĂM HỌC 2023-2024 - HK...CHUYÊN ĐỀ DẠY THÊM TIẾNG ANH LỚP 11 - GLOBAL SUCCESS - NĂM HỌC 2023-2024 - HK...
CHUYÊN ĐỀ DẠY THÊM TIẾNG ANH LỚP 11 - GLOBAL SUCCESS - NĂM HỌC 2023-2024 - HK...Nguyen Thanh Tu Collection
 
Education and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptxEducation and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptxraviapr7
 
How to Solve Singleton Error in the Odoo 17
How to Solve Singleton Error in the  Odoo 17How to Solve Singleton Error in the  Odoo 17
How to Solve Singleton Error in the Odoo 17Celine George
 
The Singapore Teaching Practice document
The Singapore Teaching Practice documentThe Singapore Teaching Practice document
The Singapore Teaching Practice documentXsasf Sfdfasd
 

Último (20)

P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdfP4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
 
Easter in the USA presentation by Chloe.
Easter in the USA presentation by Chloe.Easter in the USA presentation by Chloe.
Easter in the USA presentation by Chloe.
 
General views of Histopathology and step
General views of Histopathology and stepGeneral views of Histopathology and step
General views of Histopathology and step
 
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
 
The Stolen Bacillus by Herbert George Wells
The Stolen Bacillus by Herbert George WellsThe Stolen Bacillus by Herbert George Wells
The Stolen Bacillus by Herbert George Wells
 
3.21.24 The Origins of Black Power.pptx
3.21.24  The Origins of Black Power.pptx3.21.24  The Origins of Black Power.pptx
3.21.24 The Origins of Black Power.pptx
 
The basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptxThe basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptx
 
Quality Assurance_GOOD LABORATORY PRACTICE
Quality Assurance_GOOD LABORATORY PRACTICEQuality Assurance_GOOD LABORATORY PRACTICE
Quality Assurance_GOOD LABORATORY PRACTICE
 
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxPISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
 
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptxClinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptx
 
HED Office Sohayok Exam Question Solution 2023.pdf
HED Office Sohayok Exam Question Solution 2023.pdfHED Office Sohayok Exam Question Solution 2023.pdf
HED Office Sohayok Exam Question Solution 2023.pdf
 
Human-AI Co-Creation of Worked Examples for Programming Classes
Human-AI Co-Creation of Worked Examples for Programming ClassesHuman-AI Co-Creation of Worked Examples for Programming Classes
Human-AI Co-Creation of Worked Examples for Programming Classes
 
Diploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdfDiploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdf
 
AUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptxAUDIENCE THEORY -- FANDOM -- JENKINS.pptx
AUDIENCE THEORY -- FANDOM -- JENKINS.pptx
 
Benefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive EducationBenefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive Education
 
CHUYÊN ĐỀ DẠY THÊM TIẾNG ANH LỚP 11 - GLOBAL SUCCESS - NĂM HỌC 2023-2024 - HK...
CHUYÊN ĐỀ DẠY THÊM TIẾNG ANH LỚP 11 - GLOBAL SUCCESS - NĂM HỌC 2023-2024 - HK...CHUYÊN ĐỀ DẠY THÊM TIẾNG ANH LỚP 11 - GLOBAL SUCCESS - NĂM HỌC 2023-2024 - HK...
CHUYÊN ĐỀ DẠY THÊM TIẾNG ANH LỚP 11 - GLOBAL SUCCESS - NĂM HỌC 2023-2024 - HK...
 
Education and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptxEducation and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptx
 
How to Solve Singleton Error in the Odoo 17
How to Solve Singleton Error in the  Odoo 17How to Solve Singleton Error in the  Odoo 17
How to Solve Singleton Error in the Odoo 17
 
Finals of Kant get Marx 2.0 : a general politics quiz
Finals of Kant get Marx 2.0 : a general politics quizFinals of Kant get Marx 2.0 : a general politics quiz
Finals of Kant get Marx 2.0 : a general politics quiz
 
The Singapore Teaching Practice document
The Singapore Teaching Practice documentThe Singapore Teaching Practice document
The Singapore Teaching Practice document
 

Unit i (part1) b.sc

  • 1. Unit-1 Objective: To acquire the knowledge about the computers and input and output devices and Operating system Computer concepts Introduction to computers – Definition – Advantages & dis-advantages – classification of computers (Desktop, Laptop, Notepad) – hardware features & uses – Defining hardware – components of computer – block diagram of computer – Primary storage concept – secondary storage devices – input/output Devices – Software concepts - Operating System (O/S) – MS DOS, Windows – 2000/Xp, Unix) Language classification ( Higher level, lower level, Assembly) – Compiler and interpreter.
  • 2. Introduction to Computer Introduction The word Computer comes from the word “Compute” which means “Calculate”. So a Computer normally as a calculating device considered. Then can Perform Arithmetic operations enormous speed. Meaning 1. Computer is an electronic device. Computer is a designed to automatically accept and store input data manipulates them and produces out put through step-by-step instructions which is stored in a program. Thus a programmable machine is called computer. 2. Computer is an Electronic device.
  • 4. Hardware Meaning : The hardware of a computer consists of the electronic components and electro mechanical that comprises physical entity of the devices. The physical components of the computer are called as hardware. Example: Hard disk, floppy disk, mother board, RAM etc.
  • 5. Software Meaning: The software consists of the instructions and the data computer manipulates, to perform various data processing tasks. The set of programs or instructions written by the user is called as software. Example: Tally, Ms-Office, Java, Visual basic, Oracle etc. Classification of software: System software - Ex: MS-DOS Application software Utility software
  • 7. Primary storage concept – secondary storage devices STORAGE DEVICES Primary Storage device RAM ROM PROM EPROM EEPROM Secondary Storage Device Floppy disk Hard disk
  • 8. Primary Storage Meaning : Primary storage is usually referred to Random Access Memory (RAM), because it is possible to randomly select and use any location of this memory to directly store and retrieve data and instructions. RAM RAM – Random Access Memory It is also referred to as read/write memory because information can be „read‟ from RAM chip and can also be „written‟ into it. ROM ROM – Read Only Memory is one in which information in permanently stored. The information from the memory can only be read and it is not possible to write fresh information into it. PROM A commonly used version is the programmable ROM or PROM, which is supplied in blank form by the manufacturer. EPROM It is possible to erase information stored in an EPROM. EEROM: Instead of ROM, many devices now incorporate EEPROM‟s (Electrically Erasable PROM) which can be easily reprogrammable by the application of a small voltage.
  • 9. Secondary Storage devices Meaning: Secondary storage large volume of data on a permanent basis which can be partially transferred to the primary storage as and when required for processing. It is commonly used for “backing up data”. Floppy Disk: “Floppy” disk drives allow you to save work on small disks and take the data with you. Speed : Very slow. Capacity : Normally 1.44 Mbytes. Cost : Very cheap. Hard disk Hard disk drives are an internal, higher capacity drive which also stores the operating system which also stores the operating system which runs when your power on the computer. Speed : very fast the speed of a hard disk is often quoted as “average access time” speed, measured in milliseconds. The smaller this number the faster the disk. Capacity : Enormous Often 40/80 Gigabytes. A Gigabyte is equivalent to 1024 Megabytes. Cost : Hard disks costs are falling rapidly and normally represent the cheapest way of storing data.
  • 10. Input Devices Input device is any machine that feeds data into computer. For example a keyboard is an input device, whereas a display monitor is an output device. A keyboard and mouse are the standard way to interact with the computer. There are as follow as below: Mouse Keyboard Tracker balls Scanners Touch pads Light pads and Joy sticks Input/output Devices
  • 11. Mouse: The mouse used to ‘drive’ Microsoft windows. Keyboard : The keyboard is still the commonest way of entering information into a computer. Tracker balls: An alternative to the traditional mouse and often used by graphic designers. Scanners A scanner allows you to scan printed material and convert it into a file format that may be used within the PC. Touch pads: A device that lays on the desktop and responds to pressure.
  • 12. Light Pens Light Pens used to allow users to point to areas on a screen. Joysticks Many games require a joystick for the proper playing of the game.
  • 13. Meaning: Output is anything that comes out of a computer. Output can be meaningful information and it can appear in a variety of forms – as a binary numbers, as pictures and as printed pages. The monitor (the screen) is how the computer sends information back to us. A printer is also an output device. There are as follow as below: Monitor or DVU (Display Visual Unit) Plotters Speakers Speech Speech synthesizers Printers OUTPUT DEVICES
  • 14. Monitor: A Monitor is other wise called as DVU i.e. Display Visual Unit. Monitor is another term for the display screen. The screen is closely linked with the keyboard so that whatever characters are typed will be displayed. Plotters A plotter is an output device similar to a printer, but normally allows you to print larger images. Speakers A Speakers enhances the value of educational and presentation products.
  • 15. Speech synthesizers A speech synthesizer gives you the ability to not only to display text on a monitor but also to read the text to you. Printers In large organizations laser printers are most commonly used due to the fact that they can print very fast and give a very much quality output. There are many different types of printers. There are as follow as below: Character Printers Daisy Wheel Printer Line Printer Dot Matrix Printer Inkjet Printer Laser printers etc.
  • 16. INPUT & OUTPUT DEVICES