1.1 Computer Systems Essential Knowledge

A CPU's function is to _______ data and intructions

Organize these options into the right categories

Groups:

(a) Fetch

,

(b) Decode

,

(c) Execute

• The CU decodes the data

• The MAR holds the address of the current memory location to be used

• Any calculations that need to be performed are completed by the ALU

• The PC holds the address of the NEXT memory location to be next used.

• The CU fetches the data from memory

• The data fetched from memory is put in the MDR

• The CU executes the instruction

The Arithmetic Logic Unit performs ​ (a)   calculations and ​ (b)   operations. The ALU also contains the ​ (c)   register

• arithmetic
• mathematical
• logical
• decision making
• fetch decode execute
• accumulator
• program counter
• MAR
• MDR

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.

• decodes
• executes
• flow
• fetches
• movement
• deciphers
• carries out

Sort the statements about memory into the correct categories:

Groups:

(a) Cache

,

(b) Registers

,

(c) RAM

• Inside the CP

• Holds regularly used data and instructions

• Smallest capacity, high speed memory.

• Holds open programs and data in use.

• Level 1 Inside the CPU

• Low capacity, high speed memory

• High speed, random access memory

• Not within the CPU

• Holds data needed by the CPU immediately

Drag and drop the registers to their correct place within the CPU

b

c

d

e

MDR

Cache

Accumulator

MAR

Program Counter

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.

• memory
• storage
• regularly
• quicker
• RAM
• the registers
• fetched

Each core can complete the ​ (a)   ​ cycle ​ (b)   ; therefore the more cores the more data can be ​ (c)   in a given period of time.

• FDE
• FED
• DFE
• indepedently
• at the same time
• processed

Organise these systems into the correct category:

Groups:

(a) Embedded

,

(b) General purpose

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