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Digital Clock With Hour/Minutes Setting.

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mohd ezwan

New Member
Hye guys. Im Ezwan from Malaysia. Im a student of Electrical Engineering (Computer). I've got problem with my mini project taht is 'Digital Clock With Hour/Minutes Setting'. I really good in coding using Miniide software and HCS12. The description as follows:

A HCS12 based digital clock with hour/minute setting works as follows:

When digital clock is switched on, the LCD will display a preset 4-digit time. For example, "12:29". Note that the ":" must blink for each second has elapsed (i.e off for 500ms, on for another 500ms). The digit will advance for every minute has elapsed, just like a normal digit clock you found elsewhere. The time is displayed in 24 hour format, For example, 23:00 is night, and 11:00 is day. While the clock is operating, user can adjust the hour / minutes digit.

The adjustment can be done as follows:

Keypad '1' represents increment hour, keypad '2' represents decrements hour, keypad '3' represents increment minute and keypad '4' represents decrement minute. If user press keypad '1' once, the hour will be incremented by 1. If the hour has reach "23" , next keypad '1' pressed will reset to hour "00". If user pressed keypad '2' once, the hour will be decremented by 1. If the hour has reach "00", next keypad '2' pressed will reset to hour "23". If user pressed keypad '3' once, the minute will be incremented by 1. If the minute has reached "59", next keypad '3' pressed will reset to minute "00". If user pressed keypad '4' once, the minute will be decremented by 1. If the minute has reached "00", next keypad '4' pressed will reset to minute "59".

This is how my mini project work. I hope someone can help me. Im so noob in coding.
:(
 

Datz Me

New Member
Is there Digital clock which is not using programmable IC? Can you help me finding this circuit.
I found one but it used LM8560, is there available IC like this and if not is there any replacements?
Thank you all
 
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