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WorksheetsJ277 Unit 1
Total questions: 70
Worksheet time: 35mins
Inside the CPU, you will find:
ALU, CU, registers, cache memory
ADU, PC, storage, RAM memory
ARM, PC, controller, cache memory
APM, CU, time signal, RAM memory
The ALU....
does any maths or logic problems for the CPU
stores data inside the CPU
sends out control signals for the CPU
holds specific data for the fetch-decode-execute cycle
The CU...
does any maths or logic problems for the CPU
stores data inside the CPU
sends out control signals for the CPU
holds specific data for the fetch-decode-execute cycle
The cache memory...
does any maths or logic problems for the CPU
stores frequently used instructions close to the CPU
sends out control signals for the CPU
holds specific data for the fetch-decode-execute cycle
The registers...
do any maths or logic problems for the CPU
store data inside the CPU
send out control signals for the CPU
hold specific data for the fetch-decode-execute cycle
The MAR stores the (a) of data which is either being sent to or fetched from the RAM.
The MDR holds the (a) which is being sent to/fetched from the address in the MAR.
The PC holds the address of the next (a) which will be fetched.
The ACC holds the result of any processing by the (a) .
The main purpose of the CPU is to run the _____-______-_______ cycle.
Please include the hyphens in your answer
(a)
The first stage of the Fetch-Decode-Execute cycle is:
The next instruction is fetched from the RAM
The instruction is decoded so that it can be done
Any processing is done using the ALU
The PC is incremented
The second stage of the Fetch-Decode-Execute cycle is:
The next instruction is fetched from the RAM
The instruction is decoded so that it can be done
Any processing is done using the ALU
The PC is incremented
The third stage of the Fetch-Decode-Execute cycle is:
The next instruction is fetched from the RAM
The instruction is decoded so that it can be done
Any processing is done using the ALU
The PC is incremented
The final stage of the Fetch-Decode-Execute cycle is:
The next instruction is fetched from the RAM
The instruction is decoded so that it can be done
Any processing is done using the ALU
The PC is incremented
To get data from RAM, memory addresses are sent from the CPU down the...
bus.
registers.
ROM.
cache.
This component visually displays information generated by the computer is known as a
Monitor
Motherboard
CPU
Operating System
Look at the image. All parts are connected to the motherboard. Which label identified the Hard Disk Drive (HDD)
1
2
3
4, 5, 6
7
Look at the image. All parts are connected to the motherboard. Which label identified the CPU the Heatsink and the CPU fan?
1
2
3
4, 5, 6
7
Look at the image. All parts are connected to the motherboard. Which label identified the Power Supply Unit(PSU)?
1
2
3
4, 5, 6
7
Look at the image. All parts are connected to the motherboard. Which label identified the Random Access Memory(RAM)?
1
2
3
4, 5, 6
7
A processor is a chip with four independent units called cores that read and execute central processing unit (CPU) instructions such as add, move data, and branch
Dual Core
Tri Core
Quad Core
Hexa core
This temporary store of data will lose all contents when power is lost.
RAM
ROM
This permanent store of data saves contents when power is lost.
RAM
ROM
The processor…
Carries out instructions
Is main memory
Is secondary storage
Is an input device
The main computer components are:
Input/Output/CPU/Main memory
CPU/Main memory/Secondary storage
Input/Output/CPU/Main memory/Secondary storage
CPU/Main memory/Secondary storage
The part of a processor in which instructions are executed is known as?
Core
Centre
Execution
Instruction centre
What acts as an intermediary between the processor and the main memory?
Bus
User
Cache
Clock
What is held in cache?
All the programming instructions
Commonly used instructions and data
Instructions that have been processed
Data that hasn’t been used for a long time
This would perform an operation such as 5+8 ?
Arithmetic Logic Unit
Accumulator
Cache
Control Unit
What is held in ROM?
Data currently in use
Bootstrap loader
Instructions frequently used
Operating System
This carries the address of the next instruction:
Address bus
Data bus
Control bus
System bus
What is transferred down the data bus?
Data only
Address Only
Data and Instructions
Data, Instructions and Addressess
What accurately describes a peripheral?
A component of a computer system
A device that is not directly connected to the CPU
A device that is directly connected to the CPU
A device that is plugged in
This is not a type of secondary storage
Blu-Ray Drive/Disc
Flash Memory
Hard Disk Drive
RAM
What is the purpose of the accumulator?
To perform arithmetic operations
To hold the results of a calculation
To hold the accumulation of instructions that have happened
To remember the previous instruction being worked on
Processors have a speed measured in
Hertz
Bits
Bytes
Seconds
If the number of cores goes up from 2 to 4, what is the exact effect on
performance?
Performance decreases
The maximum number of instructions executed per second doubles
The maximum number of instructions executed per second quadruples
The maximum number of instructions executed per second is halved
If the processing speed goes up from 1GHZ to 4GHZ, what is the exact effect on the
performance of the computer?
The maximum number of instructions executed per second doubles
The maximum number of instructions executed per second quadruples
The maximum number of instructions executed per second is halved
The maximum number of instructions executed per second is quartered
If the processing speed goes up from 1GHZ to 4GHZ and the number of cores
goes from 1 to 8, what is the exact effect on the performance of the computer?
Eight times faster
Sixteen times faster
Thirty-two times faster
Sixty four times faster
Which of the following are characteristics of ROM?
Tick all that apply.
Stores Data
The memory is volatile
Stores frequently used instructions
Data is read-only, cannot be changed
Stores currently running data and instructions
Which of the following are stored in RAM?
Operating System
Programs currently in use
Data currently in use
Bootstrap / Booting Data
Drivers
A portion of the secondary storage which can be used as memory instead of adding additional RAM is called what?
(a)
Which type of memory holds frequently used instructions?
(a)
Which of the following are characteristics of Solid State Storage
Portable
Cheap
No Moving Parts
Noisy
Fast read / write speeds
Which of the following are features of secondary storage
Long Term / Non volatile memory
Short Term / Non volatile memory
Stores computers operating system, programs, files and folders
Stores frequently used instructions
Most suitable secondary storage type for a portable video camera
Magnetic
Solid State / Flash
Optical
Mechanical
Most suitable secondary storage type for a software package which will be sold in a shop.
Magnetic
Solid State / Flash
Optical
Mechanical
What is the main feature of the von Neumann Computer architecture?
There is a single PRIMARY MEMORY for both data and instructions.
The model as a single CPU
The instructions are stored in PRIMARY MEMORY
Data is stored in SECONDARY STORAGE
What are the MAIN COMPONENTS of the CPU? (Tick all that are correct).
ALU
CU
Registers
Cache Memory
RAM
Which of these are embedded systems? (tick all that apply).
Desktop
iPad
Sky Box
Washing Machine
SAT NAV
A computer has 1000 megabytes of RAM. That is the same as ...
1 Gb
1000 Gb
1 Kb
1 Tb
Which of the following types of storage would likely access its data the fastest? (4-6)
It is not a storage device
Magnetic
Solid State
Optical
The types of storage are listed below from fastest to slowest. Which order is correct? (9)
Magnetic, Optical, Solid State
Solid State, Optical, Magnetic
Magnetic, Optical, Solid State
Optical, Magnetic, Solid State
Solid State, Magnetic, Optical
