The document discusses several internal components of a computer, including processors, memory, adapter cards, storage devices, input devices, and output devices. Processors carry out instructions through binary logic operations. Memory includes static cache and EPROM. Adapter cards allow devices to communicate through buses without CPU permission. Storage devices discussed are SCSI and solid state drives. Input devices covered are touch screens and game controllers. Output devices discussed are monitors and speakers.

1. By Harrison Jerreat
INTERNAL COMPONENTS OF A
COMPUTER (TECHNICAL)

2. Processors
 what does a CPU do : CPUs carry out the instructions it is
given by users and pieces of computer programs, it
carries these out by performing different forms of logic
arithmetical operations which are read through in binary
code which consists of 1/0s where 1s = on 0s = off, a CPU
is similar to a humans brain in the way how it performs all
the actions through sending signals to other parts of the
computer.
 speed of CPU's: a CPU in 2008 would run at a minimal
speed of 166Mhz but it all depends on the chip you have
installed most are duo processor so for example a Intel
Core 2 Duo Processor E8400 is 6M Cache, 3.00 GHz, 1333
MHz FSB.

4. memory
 static (cache): SRAM is a form of semiconductor
memory unlike DRAM it doesn't have to refresh
periodically, SRAM uses bistable latching
circuitry, it is still volatile along with RAM and
DRAM.
 EPROM: sometimes refereed to as EROM it
means erasable programmable it is non volatile
and it is a group of floating-gate transistors all
programmed by a device that uses high voltages
and is erased by a UV light being shone at it from
a mercury vapour light source.

6. Adapter cards
 cardbus: cardbus runs the program bus mastering which
allows device to communicate through the cardbus to other
devices or memory without requiring permission from the
CPU.
 bus types: there are three main types of buses
control,address, and data buses, the general signals used
include instruction (I),operand(O), input/output memory (I/O
MEM) or input/output controller(IOC), and computer
interconnection system(CIS) and there is time multiplexed bus
these are the three areas in the types of buses

8. Storage devices
 SCSI: Small computer system interface is the
standards of which control physically connecting
and the transfer of data between computers. It is
usually used for hard disks drive and tape drives
it can be used with other components but it is
mainly used with HDD's and tape drives.

9.  Solid state: solid state drives use solid state
memory and use persistent data. Unlike hard
disk drives and floppy disks it has no moving
parts so it can be less likely to overheat instead
they use microchips that are non-volatile and are
less vulnerable/ prone to physical shock, and also
unlike HDD’s they are without the wurring noise
of spinning disks which could have been an
irritation to some. SDDs are only different to
HDDs in hardware in software they are rather
similar so they can be integrated into a machine
that previously used HDDs with minimal changes
to the software that ran off the HDD’s.

11. Input devices
 Touch screen: similar to ordinary screens in the way that it uses
electronic visual display but instead have an integrated layer that
detects the touch of usually fingers and hands but can also be
used by the touch of a stylus or other form of pointer object.
Typical uses of touch screen are examples such as iPod touch/
iPad and a substantial amount of modern phones and examples
of some of the ways you can interact with the software is single
touch and multiple touch in which case some software only
recognises the presence of a one object interacting whereas now
it is more common to have multiple touch where it reacts to
more than four objects interacting with it. An example of touch
screens being used in the IT industry is when a game company
makes the computer generated concept art they generally use
touch screens to render and shade the images.

12.  Game controllers: includes everything from
keyboards, mice, game pads, joysticks,
steering wheels for car games, touchscreens
and in some case tablets. They are used in the
testing of games for different platforms and
they are then used on specified consoles once
games have been released.

14. Output devices
 Monitor: the screen that displays what the actual
machine is running and has changed a lot since they
were first released originally they started being used
at data processing rather than showing images the
aspect ratio has changed from 4:3 to 16:9. they
started off as CRT (cathode ray tube) which was the
use of electrons and a florescent screen to create an
image this happens when the electrons are deflected
onto the florescent screen, but now most screens are
LCD (liquid crystal display) which uses the properties
of liquid crystal which is its light modulating
properties the image is clearer than CRT and is more
energy efficient.

15.  Speakers: comes into the category of electro
acoustics they transfer electrical signals into
sound the most typical build of speakers is to
have a paper cone around the speaker the
paper cone is supporting a voice coil. The
sound is spread by vibrations that come off of
the speaker