Machine Organization & Assembly Language

7 Questions | By Thatcsgirl | Updated: Mar 20, 2022 | Attempts: 425

Questions

Settings

Create your own Quiz

Machine organization and assembly language, computer science

Questions and Answers

1.

One of the shortcomings of the “signed magnitude” method of representing negativenumbers in binary code is:
- A.
  
  There are two codes for the number zero
- B.
  
  There is no operation for subtraction
- C.
  
  There is no simple test to distinguish positive and negative numbers
- D.
  
  The operation of addition requires complex rules
- E.
  
  Both a and d
2.

What is the representation of the (decimal) number –1 in 4 bit 1’s complement format?
- A.
  
  1001
- B.
  
  1011
- C.
  
  1111
- D.
  
  1110
- E.
  
  0001
3.

The total number of items representable by a 4 byte binary word (using conventionalabbreviations) is:
- A.
  
  16G
- B.
  
  4G
- C.
  
  32M
- D.
  
  16M
- E.
  
  8k
4.

Using two's complement encoding, subtract 11100 from 01101, and report the result as a5-bit two's complement binary number
- A.
  
  101001
- B.
  
  01001
- C.
  
  00100
- D.
  
  10101
- E.
  
  10001
5.

Convert the 8-bit two's complement number 10001111 into decimal.
- A.
  
  -241
- B.
  
  -113
- C.
  
  +143
- D.
  
  -143
- E.
  
  +112
6.

Assembly Language instruction sets can be categorized into three basic types ofinstruction:
- A.
  
  Operations, Data Movement and Control
- B.
  
  Direct, Register, and Indirect
- C.
  
  High Level, Assembly, and Machine
- D.
  
  Signed magnitude, one's complement, and two's complement
- E.
  
  Load, store, and arithmetic
7.

A label in assembly language code is:
- A.
  
  An abbreviation for an instruction
- B.
  
  A symbolic representation of a memory location
- C.
  
  Just a visual reminder for the programmer, ignored by the assembler.
- D.
  
  A temporary name given to a variable
- E.
  
  An adhesive sticker placed on the front page of the code