Computer Systems

Question 1

What is the input and output of an XOR GATE?

Answer 1

If JUST ONE input is 1(TRUE) then the output is 1(TRUE)

Otherwise output = 0 (FALSE)

Question 2

What is the input and output of an AND GATE?

Answer 2

If BOTH inputs are 1 (TRUE) then the output is 1 (TRUE)

Otherwise the output is 0 (FALSE)

Logic statement: P = A AND B
Or
A.B

Question 3

What is the input and output of an OR GATE?

Answer 3

If EITHER input is 1 (TRUE) then the output is 1 (TRUE)

Otherwise the output is 0 (FALSE)

Logic statement: P = A OR B

Or

A + B

Question 4

What is the input and output of a NOT GATE?

Answer 4

If 0 is input it outputs 1 (TRUE)

If 1 is input it outputs 0 (FALSE)

Question 5

What is hardware?

Answer 5

Hardware is the physical components that make up a computer system.

Question 6

What is software?

Answer 6

Software is the non-physical programs that are stored by and run on a computer system.

Question 7

What is a system software?

Answer 7

A system software is the software that provides a platform for other software to work.

Question 8

What are operating systems responsible for managing?

Answer 8

Operating systems manage computer hardware, users, and the resources used by software.

They are responsible for managing:

Processors

Memory

Input / Output devices

Application

Security

Question 9

“The operating system is responsible for deciding which program will run on the processor and how much time will it get to run”

TRUE OR FALSE

Answer 9

True

Question 10

Can an operating system multi task?

Answer 10

Yes, the operating system manages many tasks at the same time.

Question 11

What are interrupts?

Answer 11

Interrupts are signals sent to the CPU By external devices to indicate an event that needs immediate attention.

Question 12

What is a embedded system?

Answer 12

An embedded system is a computer system inside another system.

Example: Microwave, Washing machine

Question 13

What is assembly language?

Answer 13

Assembly language allows a programmer to create more easily than writing in machine code.

Each assembly language instruction maps directly to machine code.

It has to be translated into machine code before it can be executed

Question 14

“Processors can only execute instructions in machine code”

TRUE OR FALSE

Answer 14

TRUE

Question 15

What are the two low level languages.

Answer 15

Machine code

Assembly language

Question 16

What is a compiler?

Answer 16

Compiler translates a high level language into machine code.

Question 17

What is an interpreter?

Answer 17

An interpreter is another type of program that translates a high level language into machine code.

Unlike a compiler no object code is produced

It translates each line of code and executes it immediately

If it reaches a line with a syntax error it stops and displays an error message.

Question 18

What is a bus?

Answer 18

A bus is parallel wires connecting two or more components of the computer