Description: This procedure mainly through external interrupt INT0 and 3.3 read PS2 keyboard port value through LCD1602 display, key scan code decoder way through an array of decoding, the procedure for decoding function of the major figures and upper and lower case letters and punctuation marks commonly used hardware description: PS2 keyboard clock line (clk) then 89S51 the INT0 (P3.2), data lines data access (P3.3) LCD control port, respectively: RS = P2 ^ 7, RW = P2 ^ 6, EP = P2 ^ 5, data ports for the P0, LCD bias VL must be received
File list (Check if you may need any files):
key_b
.....\key_b
.....\Key_b.c
.....\key_b.hex
.....\key_b.lnp
.....\Key_b.LST
.....\key_b.M51
.....\Key_b.OBJ
.....\key_b.Opt
.....\key_b.plg
.....\key_b.Uv2
.....\key_b_Opt.Bak
.....\key_b_Uv2.Bak
.....\STARTUP.A51
.....\STARTUP.LST
.....\STARTUP.OBJ
.....\基于89S51的PC键盘读取（PS2）.doc
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