30456440
Description
Mind Map by Zoe Buscombe, updated more than 1 year ago
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Created by Zoe Buscombe
over 3 years ago
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CPU
- Other registers
- Memory address register
- Holds any memory
address about to be
used by the CPU
- Holds any memory
address about to be
used by the CPU
- Memory data register
- Holds data or
instructions that have
been fetched from/ to
be written to memory
- Holds data or
instructions that have
been fetched from/ to
be written to memory
- Memory address register
- Control unit
- It follows the
fetch-decode-execute
cycle
- It controls the flow of data within
and between the cpu and other
parts of the computer system
(memory and input/output
devices)
- It controls the flow of data within
and between the cpu and other
parts of the computer system
(memory and input/output
devices)
- Program counter
- Stores the address of each
instruction and tells the CPU
in what order they should be
carried out
- Stores the address of each
instruction and tells the CPU
in what order they should be
carried out
- It follows the
fetch-decode-execute
cycle
- Arithmetic/logic unit
- Carries out arithmetic operations.
- Addition / Subtraction / multiplication
- It also carries out logic
operations on binary data,
such as AND, NOT and OR
- Addition / Subtraction / multiplication
- Accumulator
- Stores calculations (results) of the ALU
- Stores calculations (results) of the ALU
- Carries out arithmetic operations.
- Cache
- Extremely fast memory in
the CPU
- It stores regularly
used data or
instructions
- The CPU can access data
stored in the cache much
faster than retrieving it
from RAM
- Extremely fast memory in
the CPU
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