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ECE201Notes(6-2)

# ECE201Notes(6-2) - ECE 201 Digital Logic Chapter 6 14 of 22...

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ECE 201 Digital Logic Chapter 6 14 of 22 6.7 Registers A Register is a group of flip-flops which are loaded and read together (in parallel) or sequentially (in series). An n-bit Register has n flip-flops and holds n bits of data. 4-bit Register with Parallel Load

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ECE 201 Digital Logic Chapter 6 15 of 22 Shift-Registers 4-bit Shift Register Serial Transfer Pulse Shift Register A Shift Register B Initial 1 0 1 1 0 0 1 0 After T 0 1 1 0 1 1 0 0 1 After T 1 1 1 1 0 1 1 0 0 After T 2 0 1 1 1 0 1 1 0 After T 3 1 0 1 1 1 0 1 1
ECE 201 Digital Logic Chapter 6 16 of 22 4-Bit Universal Shift Register What function does S 0 and S 1 have? S 1 S 0 Function 0 0 0 1 1 0 1 1

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Chapter 6 17 of 22 6.8 Counters A counter is a sequential circuit which travels through a set of pre- determined states upon the application of a series of pulses. A ripple counter is a counter whose flip-flop outputs are inputs to the clock/control (trigger) of other flip-flops of the counter. That is, there is no common clock which triggers each flip-flop. Each flip
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ECE201Notes(6-2) - ECE 201 Digital Logic Chapter 6 14 of 22...

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