Parameters:
Power supply voltage: 4.5~5.5V
PCB size: 11.1*12.7CM
Package Listing: (some components like LEDs are given more than need)
1 x PCB
512 x 3mm white blue LED
2 x XH2.54-40P round female pin
9 x 20P IC socket
9 x 74HC573 DIP
1 x USB to DC005 cable x1
1 x DC005 power socket x1
1 x 18P IC socket
1 x ULN2803 DIP
1 x 40P IC socket
1 x STC12C5A60S2 (with code)
1 x A09-103 Resisters
1 x 8*8 Self-locking switch
2 x 10uf 25V electrolytic capacitor
1 x 12MHz crystals
2 x 22pf ceramics capacitor
8 x 470ohm resistor
2 x 4.7K ohm resistor
1 x LED 3mm
1 x 0.8mm cable