2. Review
• Five competitive forces
– Customer bargaining power
– New entrant threat
– Supplier bargaining power
– Substitution threat
– Industry rivalry
• An organization responds by choosing a
competitive strategy
• Competitive strategy defines value chains and
linkages (information systems).
4. Four Computer Operations
• Input
• Processing
• Output
• Storage
“A computer is something that does stuff to data.”
5. Data Defined
• Binary digits (bits)
– Used to represent data
• Bit is either zero or one
• Sizing Computer Data
– Bytes
– 8-bit chunk equals 1 byte
– Size of main memory, storage devices etc.