1. The basic unit of digital information is:
Answer:
Explanation:
The bit (binary digit) is the most basic unit of information in digital electronics and computing, representing a 0 or 1.
2. A flip-flop is a:
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Explanation:
A flip-flop is a basic memory storage device used in digital electronics, capable of storing one bit of data.
3. The primary function of a decoder is to:
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Explanation:
A decoder takes a smaller number of input signals and expands them into a larger number of outputs.
4. An AND gate gives a high output (1) when:
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Explanation:
An AND gate outputs a high (1) only when all of its inputs are high (1).
5. What does the term 'LSB' stand for in digital electronics?
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Explanation:
LSB stands for Least Significant Bit, referring to the bit in a binary number representing the smallest value.
6. EEPROM stands for:
Answer:
Explanation:
EEPROM is a type of non-volatile memory used in computers and other devices to store data that must be saved when power is removed.
7. The binary number '1010' is equivalent to what decimal number?
Answer:
Explanation:
The binary number 1010 is equal to 10 in decimal (1*2^3 + 0*2^2 + 1*2^1 + 0*2^0).
8. In digital circuits, a multiplexer is used to:
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Explanation:
A multiplexer selects one of several input signals and forwards the selected input into a single line.
9. A seven-segment display is commonly used to display:
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Explanation:
A seven-segment display is typically used to display decimal digits and some alphabetic characters.
10. CMOS technology is known for its:
Answer:
Explanation:
CMOS (Complementary Metal-Oxide-Semiconductor) technology is widely used in digital circuits due to its low power consumption.
11. The primary function of an XOR gate is to:
Answer:
Explanation:
An XOR (Exclusive OR) gate outputs high only when the inputs are different from each other.
12. In digital logic, a 'latch' is used to:
Answer:
Explanation:
A latch is a basic memory device in digital electronics, capable of storing one bit of data.
13. The main advantage of digital signals over analog signals is:
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Explanation:
Digital signals are less susceptible to noise and distortion compared to analog signals, leading to more reliable data transmission.
14. A full adder circuit adds:
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Explanation:
A full adder adds three bits (two input bits and a carry bit) and produces a sum and a carry output.
15. The Boolean expression for a NAND gate is:
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Explanation:
A NAND gate produces an output which is the negation of the AND operation on its inputs, represented as \( \overline{A \cdot B} \).
16. What is the primary use of a shift register?
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Explanation:
A shift register is mainly used for the transfer of data in serial or parallel form.
17. The process of converting analog signals to digital is called:
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Explanation:
Sampling is the process of converting an analog signal into a digital signal by measuring its amplitude at regular intervals.
18. A digital circuit capable of holding a single binary digit is called a:
Answer:
Explanation:
A flip-flop is a digital circuit used for storing a single binary digit or bit.
19. The main component used in the first generation of computers was:
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Explanation:
The first generation of computers primarily used vacuum tubes as their main electronic component.
20. A parity bit is used for:
Answer:
Explanation:
A parity bit is added to a set of binary data to make the number of set bits either even (even parity) or odd (odd parity), used for error detection purposes. 21. The main purpose of a digital-to-analog converter (DAC) is to: a) Convert digital signals to analog format b) Convert analog signals to digital format c) Increase the speed of digital signals d) Compress digital data
22. A 'Logic High' in TTL (Transistor-Transistor Logic) circuits is typically:
Answer:
Explanation:
In TTL circuits, a 'Logic High' is typically in the range of 2V to 5V.
23. The primary characteristic of a synchronous circuit is that:
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Explanation:
Synchronous circuits use a clock signal to synchronize the operations of its components.
24. A Karnaugh map is used in digital electronics to:
Answer:
Explanation:
A Karnaugh map is a diagrammatic method used to simplify Boolean algebra expressions.
25. The main advantage of CMOS over NMOS technology is:
Answer:
Explanation:
CMOS (Complementary Metal-Oxide-Semiconductor) technology offers the advantage of lower power consumption compared to NMOS (N-Channel Metal-Oxide-Semiconductor) technology.