CS Topic 3

The number in brackets are how many points there are and all answers AREN'T in full sentences

What is the control unit (2)

It’s in charge. It understands the instructions and tells the other components what to do.

What are the characteristics of the CU (3)

It’s organised, efficient and collaborative

What does it manage/control (1/1)

It manages the instructions and controls the instructions

What is the ALU (2)

It’s the calculator. It handles all mathematics operations.

What are the characteristics of the ALU (3)

It’s logical, good with numbers and precise

what does the ALU manage (1)

it manages calculations and logic

What is the clock (2)

It’s used to regulate the number of FDE cycles carried out per second and synchronises the other components

What characteristics does the clock have (3)

Punctual, reliable and good rhythm

What does it manage (1)

cycles per second

What are registers (2)

Small, very fast memory locations inside the CPU that store and manage different datas

State the 5 registers (5)

Memory address

Memory data

Current instruction

Program counter

Accumulator

What does the Memory Address Register store (1)

memory addresses used when searching for data in RAM

What does the Memory Data Register store (1)

stores data when fetched from memory

What does the Current Instruction Register hold (1)

The binary representation of the instruction to be executed

What does the Program Counter Count (2)

Each instruction as it’s execution, keeping track of how many instructions are in the program

What does the Accumulator store (1)

Important data being used in calculations

What are the characteristics of registers (2)

Fast and reliable memory, also good at sharing

What is a bus (1 or 2)

A set of parallel wires that transport data between the components inside the processor and memory

What are the characteristics of buses (3)

Social, fast and efficient