PIC16F88 Seven Segment Digital Clock Circuit

In the beginning, I posted a clock that used PIC16F84A micro-controller. You can see it here. PIC16F84A is very old IC and it has very less functions. Therefore, today I post a developed version of that clock. It used PIC16F88 micro-controller. PIC16F88 built in many features such as large memory, internal oscillator, ADC and many more. In addition, we can use this IC for our future projects.

Preview

Circuit Created On Dot board

You can use big SSD or LEDs to build this but therefore you should add more transistors. Like this.

for large display

Here I used 4 switches to control the clock.

• SW1 – Edit / Enter
• SW2 – Up Sec / Min
• SW3 – Down Sec / Min
• SW4 – 12Hr / 24Hr
• SW5 – Reset

Click here for 1Hz Oscillator Circuits

Clock Circuits

PIC16F88 Datasheet

16F88 Pin-out

Hex File
PCB and Schematic