Slide 1 : Presentation on
Keyboard
Slide 2 : Introduction
Slide 3 : TYPES OF KEYBOARD
Slide 4 : Compact Size POS Keyboard
Slide 5 : Full size POS keyboard
Slide 6 : 78 Key POS Programmable
Keyboard
Slide 7 : LCD POS Keyboard
Slide 8 : QWERTY POS Keyboard
Slide 9 : MINI QWERTY POS KEYBOARD
Slide 10 : 28-Key POS Keyboard
Slide 11 : Compact POS Keyboard
Slide 12 : 112 Key POS keyboard
Slide 13 : 66 Key POS keyboard
Slide 14 : 51 Key POS Keyboard
Slide 15 : FUNCTIONING OF KEYBOARD
Slide 16 : KEYBOARD CONTROLLER KEYBOARD
BUFFER SYSTEM SOFTWARE CPU 1 A key is pressed on the keyboard 2 The keyboard controller sends the scan code for the key to key board buffer 3 The keyboard controller sends an interrupt request to the system software 4 The system software responds to the interrupt by reading the scan code from the keyboard buffer 5 The system software passes the scan code to CPU
Slide 17 : ANY QUESTIONS PLEASE ?
Slide 18 : Thank you