Where is the CPU located and what is its main purpose?
The CPU is located on the motherboard. It's main purpose is to process data.
1 of 18
List the cycle of fetch-decode-execute
The CPU: Fetches instructions from memory (RAM), Decodes these instructions, Executes the instructions provided by the software.
2 of 18
What hardware does the CPU control?
The CPU controls the hard disk, input/output devices, DVD drive, sound and graphics system
3 of 18
What are the main components of the CPU?
The main components are the Control Unit (CU), Arithmetic Logic Unit (ALU), registers, cache, clock, data buses.
4 of 18
What are the 3 tasks of the CU?
CU controls the way data moves around the CPU, controls and monitors the flow of data between CPU and other hardware components, executes the instructions provided by the program.
5 of 18
What does the ALU do?
ALU handles data processing inside the CPU. It performs standard arithmetic operations and deals with logic and comparision.
6 of 18
What are the registers what do they do?
A register is a type of temporary memory in the CPU. It is faster to shift data to and from the registers than RAM so speeds up processing time.
7 of 18
What is the cache and what does it do?
Cache is a type of temporary memory. It is faster to access than RAM but slower than registers. Internal and external.
8 of 18
List in order of speed the types of memory starting with the slowest
Hard disk, RAM, EX Cache, IN Cache, Registers
9 of 18
What is the clock and what does it do?
Clock is a tiny quartz crystal inside the CPU which ticks at a steady speed. Each tick=CPU processes 1 instruction. Typical speed is 3GHz
10 of 18
What are the buses?
A bus is a set of wire/tracks laid on a printed circuit board. They carry data around the system
11 of 18
What is the data bus?
A data bus carries data around the system
12 of 18
What is the address bus?
The address bus carries information on the location of the data.
13 of 18
What is the control bus?
The control bus handles commands to control devices eg. hard disk, monitor
14 of 18
Describe the role of the CPU (4)
Fetches instruction, decodes and processes these instrucutions received from memory, executes the decoded instrcutions, manages the hardware and peripherals
15 of 18
Decribe how the CPU and RAM work together to process data(5)
The instructions that are currently running are stored in RAM. The instructions are fetched by the CPU from RAM. The CPU executes these instructions to process data.
16 of 18
Explain the purpose of cache memory?(2)
Cache memory is a special types of very fast memory whcih stores instructions/data that are about to be uses, frequently used, recently been used. Enables data to be passed to and from registers much faster than RAM
17 of 18
Explain the purpose of a register in the CPU(3)
A special type of memory within the CPU, hold a very small amount of data. Used to hold data temporarily while software programs runs in RAM. Allow data access to be very quick.
18 of 18
Other cards in this set
Card 2
Front
The CPU: Fetches instructions from memory (RAM), Decodes these instructions, Executes the instructions provided by the software.
Back
List the cycle of fetch-decode-execute
Card 3
Front
The CPU controls the hard disk, input/output devices, DVD drive, sound and graphics system
Back
Card 4
Front
The main components are the Control Unit (CU), Arithmetic Logic Unit (ALU), registers, cache, clock, data buses.
Back
Card 5
Front
CU controls the way data moves around the CPU, controls and monitors the flow of data between CPU and other hardware components, executes the instructions provided by the program.
Comments
No comments have yet been made