How to study cracking the coding interview
Low level 16.4 Write a step-by-step run of things that happen after the user presses a key keyboard. Use as much data as possible. INTRODUCTION 1. The keyboard sends a key scan code to the keyboard controller (scan code for key pressed and key released are different). 2. The keyboard controller interprets How to study cracking the coding interview and stores the scan code in a buffer. 3. The keyboard controller sends a hardware input to the processor. This is done with “Broken application line” signpost: IRQ 1. 4. The controller breaks the assignment of IRQ 1 to INT 9. 5. An interrupt is a signal that tells the processor to stop what it was currently doing. and perform a special task. 6. The processor invokes the "interrupt handler". The CPU gets the address "Interrupt 7. The ISR reads the scan code for port 60h and decides if it should be processed or passed. control to program to operate. As with any intervie