ECE 3130 – Digital Electronics and Design

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Presentation transcript:

ECE 3130 – Digital Electronics and Design Lab 8 Binary Counter Fall 2017

Introduction A binary counter is a device that stores the number of times that an event/process occurs Up/down counter When the selector is in the up state, the counter increments its value When the selector is in the down state, the counter decrements its value

4-bit Up/Down Binary Counter

Schematic of Up/Down counter T Flip-Flop OR Gate AND Gate

Symbol of Up/Down counter

Test circuit of Up/Down counter clk – period: 20ns, rise/fall time:1ns up – period: 1500ns down – period: 1600ns, VLow: 5v, VHigh: 0v Simulation time: 1500ns, Step time: 5ns

Waveforms of Up/Down counter

Assignment Build and test a 4-bit up/down binary counter. Attach all screenshots into one PDF file, including schematic, symbol, test circuit schematic, waveforms.