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| Fetch - Execute - Cycle |
Questions
1(a) What do the initials CPU stand for?
- Central
Processing Unit
(b) List three components of the CPU.
- Registers, ALU,
Memory
(c) In relation to computer architecture, what are buses?
- They transport information
- They transport information
2) Describe the function of the following in the
fetch-execute cycle.
(a) Program counter
- is a register that holds the next instruction to be
executed in the Memory
(b) The address bus
- A collection
of wires connecting the CPU
with main memory
that is used to identify particular locations in main memory.
(c) The data bus
- In computer architecture, a bus is a communication system that transfers data between components inside a computer, or between computers.
(c) The data bus
- In computer architecture, a bus is a communication system that transfers data between components inside a computer, or between computers.
(d) The decoder
- A decoder is a device which does the
reverse operation of an instruction
(e) The Arthmetic and Logic Unit
- In digital electronics, an arithmetic logic unit is a digital circuit that performs integer arithmetic and logical operations. The ALU is a fundamental building block of the central processing unit of a computer, and even the simplest microprocessors contain one for purposes such as maintaining timers.
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