Learning Outcomes

This chapter will help you to:

8-1 Draw a circuit diagram of a ripple counter using J-K flip-flops.

8-2 Convert a 4-bit ripple counter to mod-10 (decade) counter.

8-3 Analyze the circuit action of any mod-3 through mod-8 synchronous counter.

8-4 Analyze the circuit action of ripple down counters.

8-5 Explain the action of down counters with a self-stopping feature.

8-6 Understand the operation and draw a block diagram of a frequency divider circuit.

8-7 Interpret the data sheets for two TTL counter ICs (7493 4-bit counter and 74192 up/down decade counter). Characterize the operation of several circuits using TTL counters.

8-8 Interpret the data sheets for two CMOS counter ICs (74HC393 4-bit binary counter and 74HC193 4-bit binary up/down counter). Summarize the operation of several circuits using CMOS counters.

8-9 Investigate the features of the 4553 three-digit BCD counter. Analyze the operation of a three-digit decimal counter with multiplexed displays (using 4553 BCD counter and 4543 BCD-to-seven-segment decoder/driver ICs).

8-10 Determine the operation of an optical sensor used as input transducer. Demonstrate knowledge of a counter system using optical encoding of a shaft encoder disk.

8-11 Predict the operation of a magnitude comparator (74HC85 4-bit magnitude comparator). Explain the operation of a simple electronic game using a magnitude comparator.

8-12 Analyze and discuss the operation of a complex electronic tachometer. The experimental tachometer features a Hall-effect switch input, one-shot MV input, three-digit BCD counter (4553 IC), seven-segment decoder/driver (4543 IC), and three multiplexed seven-segment displays.

8-13 Troubleshoot a simple ripple counter.