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Worksheets1.1 Computer Systems Essential Knowledge
Total questions: 15
Worksheet time: 23mins
A CPU's function is to (a) data and intructions
The CU fetches the data from memory
The CU decodes the data
The PC holds the address of the NEXT memory location to be next used.
The data fetched from memory is put in the MDR
The CU executes the instruction
Any calculations that need to be performed are completed by the ALU
The MAR holds the address of the current memory location to be used
The Arithmetic Logic Unit performs (a) calculations and (b) operations. The ALU also contains the (c) register
The Control Unit (a) and (b) data and instructions. It also controls the (c) of data which allows data to be fetched to the CPU and instructions to be sent to other hardware components.
Sort the statements about memory into the correct categories:
Low capacity, high speed memory
Smallest capacity, high speed memory.
High speed, random access memory
Holds regularly used data and instructions
Holds data needed by the CPU immediately
Holds open programs and data in use.
Level 1 Inside the CPU
Inside the CP
Not within the CPU
Drag and drop the registers to their correct place within the CPU
Cache
MAR
MDR
Program Counter
Accumulator
Clock speed is
the amount of FDE cycles a CPU can perform
the amount of FDE cycles a CPU can perform per second
How much cache a CPU has
The number of cores that a CPU contains
Cache is high speed (a) which holds (b) used data. Cache is (c) to access than (d) therefore the more cache the quicker data can be (e) for processing.
Each core can complete the (a) cycle (b) ; therefore the more cores the more data can be (c) in a given period of time.
Organise these systems into the correct category:
smart fridge
in car GPS
smart TV
smart watch
laptop
desktop PC
tablet computer
Which register holds the address for the current FDE cycle?
MAR
MDR
Program Counter
Accumulator
Which register holds the address for the next FDE cycle?
MAR
MDR
Program Counter
Accumulator
Which register holds the data fetched from memory?
MAR
MDR
Program Counter
Accumulator
Which register holds the resylts of calculations performed by the ALU?
MAR
MDR
Program Counter
Accumulator
Embedded systems
perform multiple tasks
perform one or a limited number of tasks
are built into a larger system to control the device
are systems in their own right, designed to execute programs
