Machine Organization & Assembly Language
Machine organization and assembly language, computer science
- 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
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