Digital Clock with PIC16F84A

The clock is regarding one of the oldest human inventions, where it’s meeting the need to measure the time in the natural units, such as second, minute, day, month and the year. However, if you want to measure the time accurately, you’ll need the help of some devices.
Brother Paul has invented the first record of a minute hand on a clock in 1475. Alexander Bain, a Scottish clockmaker was the first inventor that patented the electric clock in 1840! Although the digital clock is one of the most common items in nowadays, but you cannot miss this digital clock:



This is a small ajustable clock based on microcontroller PIC16F84A microchip.Theelectronic project here is very simple because the hardware only uses 74hct238 demultiplexer, 4x7 segments, and some resistors. The software is programmed through a device connected to serial port with icprog and made/debuged with MPlab. ForPIC Programmer you can use JDM PIC16F84A programmer.