Arithmetic Operations and Circuits Questions and Answers

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Q1
When 1100010 is divided by 0101, what will be the decimal remainder?
  • A 2
  • B 3
  • C 4
  • D 6
Answer: Option B
Q2
What are the two types of basic adder circuits?
  • A half adder and full adder
  • B half adder and parallel adder
  • C asynchronous and synchronous
  • D one's complement and two's complement
Answer: Option A
Q3
Adding the two's complement of –11 + (–2) will yield which two's complement answer?
  • A 1110 1101
  • B 1111 1001
  • C 1111 0011
  • D 1110 1001
Answer: Option C
Q4
The two's complement system is to be used to add the signed numbers 11110010 and 11110011. Determine, in decimal, the sign and value of each number and their sum.
  • A –14 and –13; –27
  • B –113 and –114; 227
  • C –27 and –13; 40
  • D –11 and –16; –27
Answer: Option A
Q5
The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits:
  • A increase ripple delay
  • B add a 1 to complemented inputs
  • C reduce propagation delay
  • D determine sign and magnitude
Answer: Option C
Q6
How many basic binary subtraction operations are possible?
  • A 4
  • B 3
  • C 2
  • D 1
Answer: Option D
Q7
How many basic binary subtraction combinations are possible?
  • A 4
  • B 3
  • C 2
  • D 1
Answer: Option B
Q8
Use the two's complement system to add the signed numbers 11110010 and 11110011. Determine, in decimal, the sign and value of each number and their sum.
  • A –14 and –13; –27
  • B –113 and –114; 227
  • C –27 and –13; 40
  • D –11 and –16; –27
Answer: Option A
Q9
The selector inputs to an arithmetic-logic unit (ALU) determine the:
  • A selection of the IC
  • B arithmetic or logic function
  • C data word selection
  • D clock frequency to be used
Answer: Option A
Q10
Adding in binary, the decimal values 26 + 27 will produce a sum of:
  • A 111010
  • B 110110
  • C 110101
  • D 101011
Answer: Option C

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