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本文介绍了用单片机测量频率和作为频率源的测控系统.简述了系统的工作原理、硬件结构和软件设计.

2025-02-01 7 LS-TTL

1测试原理测试器的硬件连接如图1所示,本文以14脚芯片为例,若被测芯片为16脚或者18脚,只须适当改变接线即可.

2025-02-03 8 LS-TTL

This device contains four independent gates each of whichperforms the logic NAND function. Th

2024-02-12 3 LS-TTL

This device contains six independent buffers each of whichperforms the logic INVERT function.

2024-03-18 4 LS-TTL

This device contains four independent gates each of whichperforms the logic NAND function. Th

2024-03-22 1 LS-TTL

These positive-edge triggered flip-flops utilize TTL circuitryto implement D-type flip-flop l

2024-04-03 2 LS-TTL

These positive-edge triggered flip-flops utilize TTL circuitry toimplement D-type flip-flop l

2023-12-18 1 LS-TTL

This device contains four independent gates each of whichperforms the logic NAND function. Ea

2023-12-27 2 LS-TTL

2013-12-23 26 LS-TTL

基于LS算法信道估计的OFDM系统仿真，这对于初学OFDM的人来说，非常有帮助

2013-11-28 117 LS-TTL