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Types of Keyboard

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Description
Presentation on different types of keyboards

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Presentation Transcript Presentation Transcript

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

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