Computers

What is a computer?
4 An electronic machine:
– Accepts information (input)
– Processes it according to specific instructions
– Stores raw and processed information
– Provides the results as new information (output)
4 Computers cannot think but it can make simple decisions and comparisons.
4 Computers cannot solve problems on its own ® must be fed with instructions.

What does a computer system consist of?
4 Hardware: physical components of a computer.
4 Software: programs that tell the computer what to do.

Computer Architecture (Hardware):
4 Deals with the hardware components of a computer system:
– Memory:
• Primary and secondary
– Central Processing Unit (CPU)
– Peripherals:
• Input devices and output devices











4 Input devices:
– Tools from which the computer can ac...