Digital Electronics Digital Arithmetic Operations and Circuits Online Test

For a 4-bit parallel adder, if the carry-in is connected to a logical HIGH, the result is:

What is the first thing you will need if you are going to use a macrofunction?

Perform subtraction on each of the following binary numbers by taking the two’s-complement of the number being subtracted and then adding it to the first number.
01001 01100
00011 00111

Solving –11 + (–2) will yield which two’s-complement answer?

What are constants in VHDL code?

The 2’s-complement system is to be used to add the signed binary numbers 11110010 and 11110011. Determine, in decimal, the sign and value of each number and their sum.

The most commonly used system for representing signed binary numbers is the:

What is the major difference between half-adders and full-adders?

Fast-look-ahead carry circuits found in most 4-bit full-adder circuits:

The binary subtraction 0 – 0 =

Adding in binary, a decimal 26 + 27 will produce a sum of:

Convert each of the following signed binary numbers (two’s-complement) to a signed decimal number.
00000101 11111100 11111000

How many basic binary subtraction operations are possible?

If [A] = 1011 1010, [B] = 0011 0110, and [C] = [A] • [B], what is [C 4..2] in decimal?

Using 4-bit adders to create a 1See Section 6-bit adder:

When performing subtraction by addition in the 2’s-complement system:

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.

When 1100010 is divided by 0101, what is the decimal remainder?

One way to make a four-bit adder perform subtraction is by:

What is the most important operation in binary-coded decimal (BCD) arithmetic?

The range of positive numbers when using an eight-bit two’s-complement system is:

What are the two types of basic adder circuits?

A half-adder circuit would normally be used each time a carry input is required in an added circuit.

If B[7..0] = 10100101, what is the value of B[6..2]?

How many inputs must a full-adder have?

Determine the two’s-complement of each binary number.
00110 00011 11101

Solve this binary problem: 01110010 – 01001000 =

What distinguishes the look-ahead-carry adder?

Half-adders can be combined to form a full-adder with no additional gates.

Which of the following is correct for full adders?