MSI Asynchronous Counters
In this activity, we constructed circuits that implemented Asynchronous Counters with MSI Gates, or the 74LS93 Chip.
4-Bit Binary Up Counter: 0 - 9 4 Bit Binary Up Counter: 0 - C(12)
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Modified 4-Bit Binary Up Counter
This circuit can be paused or reset at will with the toggling of the two switches. |
Conclusions:
1. The advantage of implementing an asynchronous counter with the 74LS93 integrated circuit versus using discrete flip-flops is that the 74LS93 integrated circuit allows for less external wiring. So, this makes bread-boarding and other forms of physical wiring much less labor-intensive. It is also more convenient and cheaper to implement.
2. The disadvantages to using the 74LS93 integrated circuit are that the J-K flip-flops are not pre-settable so this means that the count must always start at zero.
3.The implementation shown is better because it implements all of the same type of gate, NAND. This allows for marginally better expenses individually, but when bought in bulk allows for massive financial savings.
1. The advantage of implementing an asynchronous counter with the 74LS93 integrated circuit versus using discrete flip-flops is that the 74LS93 integrated circuit allows for less external wiring. So, this makes bread-boarding and other forms of physical wiring much less labor-intensive. It is also more convenient and cheaper to implement.
2. The disadvantages to using the 74LS93 integrated circuit are that the J-K flip-flops are not pre-settable so this means that the count must always start at zero.
3.The implementation shown is better because it implements all of the same type of gate, NAND. This allows for marginally better expenses individually, but when bought in bulk allows for massive financial savings.