Description: Display LCD storage oscilloscope based on 8255
A) AD converter with input signal is acquired, stored in the SRAM (case 6264) chip,
b) 进行DA转换后回放SRAM中的数据，通过模拟示波器显示。
B) data playback in SRAM for DA conversion, display through the analog oscilloscope.
c) 利用键盘控制单步和连续慢放信号波形。
C) using the keyboard to control the single and continuous slow signal waveform.
d) 波形参数可以用数值或图形在数码管或LCD上显示，或者可以结合示波器进行图形回放显示。
D) waveform parameters can be used in numerical or graphical or LCD digital tube display, or can be combined with the oscilloscope graphics display.
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zgw.c
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