PC-KEYB Hardware

Download PC-KEYB schematic [PDF 17kB]

  • U1 - AT89C51
  • U2 - ST M3493B2 (GM62093A)
  • U3 - NE555
  • Q1,Q2 - BC337
  • X-TAL - 24MHz
  • RR - 6x3k3
  • R2,R3,R4,R6 - 4k7
  • R5 - 10k
  • C1 - 100uF
  • C2 - 100nF
  • C3,C4 - 33pF

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