Digital Electronics 面试题与答案
问题 31. Differentiate between a latch and a flip-flop.
Latches are level-sensitive and can change output state as long as the clock input is active. Flip-flops are edge-sensitive and change state only on the rising or falling edge of the clock signal.
问题 32. What is the significance of Gray code in digital systems?
Gray code is a binary numeral system where two successive values differ in only one bit. It is used in applications where a single bit change should result in a small change in the system state.
问题 33. Explain the operation of a 4-bit binary ripple counter.
A 4-bit binary ripple counter consists of four flip-flops, each toggling on the falling edge of the previous flip-flop's output. The output forms a binary count sequence.
问题 34. Define the term 'combinational logic circuit'.
A combinational logic circuit generates output solely based on the current input, without considering past inputs or states.
问题 35. What is the purpose of a digital multiplexer in communication systems?
In communication systems, a digital multiplexer combines multiple input signals into a single output signal for transmission over a shared medium.
用户评价最有帮助的内容：
- Explain the concept of flip-flops in digital circuits.
- What is the purpose of a multiplexer?
- What is the difference between combinational and sequential circuits?
- What is the purpose of a digital-to-analog converter (DAC)?
- What is the purpose of a register in digital systems?