Describe three functions performed by the processor
State two functions of the Control unit of a computer.
(a) State the purpose of registers in a computer system (1mk)
To hold data and instructions temporarily as they are being processed in the CPU ( 2mks)
(b) Name two multi-programming operating systems (2mks)
Windows 9X, Linux, Windows 2000, and Windows NT
Name two types of buses found on the computer motherboard
(b) State the purpose of each of the types of buses named in (a) above
Computer systems are built from three types of physical components: processors, memories and I/O Devices.
(a) State two tasks of a processor (2mks)
(b) State the functions of I/O devices
The diagram below represents the essential features of a computer system. Study the diagram and answer the questions that follow:
(a) The diagram below represents the essential features of a computer system. Study the diagram and answer the questions that follow:
(i) Name the components: (4mks)
Differentiate between (a) data and information (b) central processing unit and system unit.
(a) data and information.
Data can be defined as raw facts that do not have much meaning to the user while information is the processed data that is meaningful to the user.
(b) central processing unit (CPU) and system unit.
The central processing unit (CPU) is the central part of the computer where data processing is done while the system unit is the part that houses the CPU and other internal components.
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