2025-09-21 12:53:50
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Question 1 a) Draw a 555 timer, identify its terminals and state their functions b) State and briefly explain two modes of 555 timer operation Question 2 a) What is a flip-flop? b) Explain the following with the reference to flip-flop i. Clocked S-C flip flop ii. Clocked J-K flip flop iii. D Flip Flop Question 3 a) What is a register? b) Explain the following with the reference to registers i. Shift register ii. Parallel data transfer c) Explain the following with the reference to registers i. Multiplexers ii. De-multiplexers Question 4 a) With the aid of diagrams, explain the following circuits with the reference to digital electronics i. Sequential logic circuit ii. Combinational logic circuit iii. A latch b) Draw logic circuits and the truth tables of the following i. Half adder ii. Half subtractor
问题1 a) 绘制555计时器,识别其端子并说明其功能 b) 状态并简要说明555定时器操作的两种模式 问题2 a) 什么是触发器？ b) 参照触发器解释以下内容 i.时钟s-c触发器 二。时钟控制的j-k触发器 三。D触发器 问题3 a) 什么是登记册？ b) 参考寄存器解释以下内容 i.移位寄存器 二。并行数据传输 c) 参考寄存器解释以下内容 i.多路复用器 二。解复用器 问题4 a) 借助图表

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