OCR GCSE Computer Science Revision Paper 1- Saim C :D
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Computers
8th - 12th Grade
Used 220+ times
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98 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
State the purpose of the CPU.
Contains the CU
Executes all of the stored program instructions
Contains registers
Interprets instructions
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define the purpose of the CU
Controls all the other components of the CPU.
Interprets program instructions and tells the ALU what operations to carry out
Electrical conductors
A very fast RAM
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define the purpose of the ALU
Controls the flow of data
A simple memory location stored within the CPU which helps with the storage of application software
Performs the arithmetic and logical operations to carry out program instructions
Controls what rate instructions are executed.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the clock?
The time between a input such as a key being pressed and the output of the key being presented.
The time taken to send a packet across a network
The time taken for a router to connect to the internet
Controls the speed at which program instructions are carried out, by sending control electrical signals at regular intervals,AKA cycles
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Define the purpose of the decoder.
Used to find bugs in the PC to ensure the PC runs smoothly and at its best performance
To translate the instructions and tells the other components, ALU what operations to carry out
Executes logical operations and arithmetic operations.
To transport instructions around the motherboard
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a bus transport data across the motherboard.
Electrical conductors that carry electrical signals between components.
A bus is a little wire which passes on instructions by the internet
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
What is clock speed?
How many clock cycles can be performed within a second.
The GHz
How many instructions can be carried in 1 second.
The speed of how quickly a PC is able to respond to inputs.
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