| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 | 
|---|
| 1 | HD74HC191P | COUNTER|UP/DOWN|4-BIT BINARY|HC-CMOS|DIP|16PIN|PLASTIC | 75K |   |   | 
| 2 | HD74HC191P | Synchronous Up/Down Decade Counter (Single Clock Line) | 153K |   |   | 
| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 | 
|---|
| 1 | HD74HC191P | COUNTER|UP/DOWN|4-BIT BINARY|HC-CMOS|DIP|16PIN|PLASTIC | 75K |   |   | 
| 2 | HD74HC191P | Synchronous Up/Down Decade Counter (Single Clock Line) | 153K |   |   |