89C2051 Digital 4 Bits Electronic Clock Electronic Production Suite DIY Kit

​AT89C2051 Digital 4 Bits Electronic Clock Electronic Production Suite DIY Kit

Function:

1. Seconds correction (for precise School)

2. Switch to every minute independent display interface

3. whole point of time (8-20 o\'clock chime can be turned off)

4. Two alarm settings (you can turn off the alarm function)

5. PCB size: 52mm long * 42mm wide

6. Power supply voltage: 3V-5V （Recommended: 5V ）

Kit Features:

A. 0.56 inch special red digital clock for display;

B. Import AT89C2051 for master chip;

C.1.2mm thick PCB made from military grade FR-4 board;

D. accurate travel time, travel time error range error -1 to +1 seconds every 24 hours.

setting, LED flashes the last one, the last one by S2 plus one, between 0 and 9 cycles, digital the greater the faster the clock, press S1 to confirm the setting and return to the clock display. Set.

List:

name specification Quantity serial number

0.25w resistance 4.7K 5 R1.R3-R6

Exclusion 470*9 1 R2

electrolytic capacitor 10uf 1 C1

ceramic capacitor 30p 2 C2, C3

104 1 C5

diode IN4007 2 D1, D2

Nixie tube 0.4" 1 DS1

crystal oscillator 12HMz 1 T1

key switch 6*6 2 S1, S2

audion 8550 1 Q1

singlechip AT89C2051 1 V1

socket DIP20 1

buzzer 5V 1 V2

terminal KF126-2P 1 J1

circuit board 1

Note: This kit needs to be soldered by yourself!

Package Included:

1pcs * AT89C2051 Digital 4 Bits Electronic Clock