Computer Knowledge

Digital Logic and Microprocessors

735 Questions

Digital logic and microprocessors form the core of computer science, covering logic gates, combinational and sequential circuits, and CPU architecture. These topics are crucial for computer knowledge sections in technical exams. Test your digital electronics basics here.

Logic gates and circuitsCombinational vs sequential circuitsMicroprocessor instructionsTruth tables and boolean functions

Digital Logic and Microprocessors Questions

Multiple choice

Digital circuits are constructed with

  1. IB

  2. IC

  3. ID

  4. IE
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Digital circuits are built using integrated circuits (ICs), which contain the logic gates and transistors necessary for digital operations.

Multiple choice

TTL means

  1. transistor-transistor logic

  2. test-transistor logic

  3. transistor-test logic

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

TTL stands for Transistor-Transistor Logic, a logic family built from bipolar junction transistors.

Multiple choice

DTL means

  1. diode-transistor logic

  2. diode-test logic

  3. dual transistor logic

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

DTL stands for Diode-Transistor Logic, an early logic family that preceded TTL.

Multiple choice

The 1 logic level in TTLIC is ____ volt.

  1. 0.5

  2. 1.5

  3. 2.5

  4. 3.5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In standard TTL logic, a logic high (1) is typically represented by a voltage level between 2.4V and 5V, with 3.5V being a common representative value.

Multiple choice

NMOS means

  1. n channel mos

  2. n complement mos

  3. n carrier mos

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

NMOS stands for n-channel metal-oxide-semiconductor. It is a type of field-effect transistor where the channel is formed by n-type carriers.

Multiple choice

ECL means

  1. emission coupled logic

  2. emitter cool logic

  3. emitter coupled logic

  4. emission cool logic
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

ECL stands for Emitter Coupled Logic. It is a high-speed logic family that uses an overdriven bipolar junction transistor differential amplifier.

Multiple choice

A half adder adds _____ bits.

  1. 1

  2. 2

  3. 4

  4. 8
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A half adder is a digital circuit that adds two single-bit binary numbers, producing a sum and a carry.

Multiple choice

A full adder adds ____ bits.

  1. 1

  2. 2

  3. 3

  4. 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A full adder adds three bits: two significant bits and a carry-in bit from a previous stage.

Multiple choice

The input variable of a half adder is called

  1. augend

  2. multiplicand

  3. dividend

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A half adder takes two single-bit binary inputs, commonly referred to as the augend and the addend. These terms describe the two numbers being added together.