8254 A Programmable Interval Timer | by Sharan Patil | Medium
8254 Timer and Counter (8254 IC). - ppt download
This laptop decided to abruptly shut down during an update, and now every time I try to boot it up, it won't get to the lock screen, it just keeps turning off :
8254 Control Word and Operating modes - GeeksforGeeks
MP 8253,54 Timer Slides | PDF | Classes Of Computers | Electronic Design