keyed pulse encoder
Source: InternetPublisher:兰博 Keywords: Encoder pulse coding CD4518 Updated: 2020/05/05
Shown is a keyed pulse encoder . The circuit consists of a 10-4 line priority encoder CD40147, a 4-bit numerical comparator CD4585
and a binary counter CD4518 . When a key is pressed, CD40147 encodes it and sends the code to data terminal A of CD4585,
and at the same time causes CD4518 to start counting. When the count output is equal to the encoding input, the comparator outputs a high level, and this signal stops the pulse oscillator,
thus forming a 9-channel pulse encoder .
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