PPSC Excise and Taxation Inspector 2018 Question Paper

Practice Mode:
66.

The function of CPU is to

A: provide external storage of text
B: communicate with the operator
C: read, interpret and process the information & instruction
D: provide a hard copy

The answer is: C

Explanation

Answer: C) Read, Interpret and Process information & instructions

Why other options are wrong:

OptionWhy Wrong
A - External storageThat is the function of Hard Drive/USB/Cloud
B - Communicate with operatorThat is the function of Monitor/Output devices
C - Read, Interpret, ProcessThis is exactly what CPU does ✓
D - Provide hard copyThat is the function of Printer

 

CPU Breakdown:

CPU has 3 core components:

  • CU (Control Unit) → reads & interprets instructions
  • ALU (Arithmetic Logic Unit) → processes/executes instructions
  • Registers/Cache → temporarily holds data during processing

 

Key Concept:

  • CPU = "Brain of the Computer"
  • Every instruction, calculation and operation passes through the CPU
  • Without CPU, no processing of any kind is possible

 

Simply put — CPU reads instructions, understands them and executes them.