Presentation on

Keyboard

IntroductionIntroduction

TYPES OF KEYBOARDKEYBOARD

1. Compact Size POS Keyboard

2.  Full Size POS Keyboard

3.   78-Key POS Keyboard4.   LCD-POS Keyboard

5.  Qwerty-POS keyboard  6.   Mini Qwerty POS Keyboard7.   28-Key POS Keyboard8.   Compact POS Keyboard

9.  112, 66, 51, Key POS Keyboard  

Here, are some types:

Compact Size POS Keyboard

-64 fully programmable keys-Keyboards are backed up by 1.2mm thick metal frame-Available in USB, PS/2 Interface

-Programmable keys can be programmed with 255 characters

- Provides multi-level programming

-Provides for a variable time delay in each programmed string-Support PS/2 programming in DOS, Windows9X, Me, 2K, XP

-USB programming through the USB HID interface, need not any keyboard drivers.

FEATURES:

Full size POS keyboard

FEATURES:-32 fully programmable keys-QWERTY section is made of POS graded membrane keys -Numeric section is made of Cherry MX key switches -Keyboards are backed up by 1.2mm thick metal frame-With built-in touchpad, removable, detachable cables-Available in USB, PS/2 Interfac -Programmable keys can be programmed with 255 characters -Provides multi-level programming-Provides for a variable time delay in each programmed string-Provide a true Caps/Scroll/Numeric Lock function independent of any other keyboards being connected

-USB programming through the USB HID interface, need not any keyboard drivers.

78 Key POS Programmable 78 Key POS Programmable KeyboardKeyboard

FEATURES:-Two different key actions (soft contact and key click)-Laser-engraved keycap symbols or high quality UV silk screen printed keycap symbols-Operating life cycle of individual keys: >Soft contact mode: 50 million strokes >Key click mode: 20 million strokes

-Damaged keys can be easily replaced and hence save the replacement cost

-All keys can be programmed with unlimited characters-Does not require a TSR program and hence avoids application software crashes

-Provides multi-level programming-Provide a true Caps/Scroll/Numeric Lock function independent of any other keyboards being connected

LCD POS Keyboard

FEATURES:-LCD pos programmable keyboard features

-Display is present at top of board

-Rest is same as of previous POS keyboard

LCD Features:

-Dot Matrix LCD (132 * 32), with backlight LED-Support ESC/POS Protocol, control to display on both display or either one

-With built-in LCD Display, replacing the bulky monitor; low cost and space saving POS solution

QWERTY POS Keyboard

FEATURES:-Option for Unlimited Programmability of all Keys in up to 3 Layers Provides Convenient Data Access

-Plug and Play Configuration for all Common POS Features

-Enhanced US 131/127 Position Key Layout-Moving of Keys Allows for Easy Key Position Exchange Including Modifier Functions

-Pop-up Window for Comfortable Display of Programmed Keys-Robust Product Design with IP 54 Spill and Dust Resistant Key Field for Harsh Environments-Selection of Non-Keyboard Hexcodes Enhances Security for Credit Card Processing

-Full size keyboard with QWERTY layout-Fully Programmable Keyboard with 42 Relegendable Keys for Easy Layout Configuration and Quick Function Calls

MINI QWERTY POS KEYBOARD

FEATURES:-Compact keyboard with QWERTY section, with programmable keys

-High quality membrane keys with tactile feeling-Laser-engraved keycap symbols or high quality UV silk screen printed keycap symbols

-Damaged keys can be easily replaced and hence save the replacement cost-With internal strong metal plate to enhance the protection against ESD is increased

-All keys can be programmed with unlimited characters-Provides multi-level programming

-Support PS/2 programming in DOS, Windows9X, Me, 2K, XP

28-Key POS Keyboard

FEATURES:-With 28 Cherry MX key switches, good tactile feeling-With spill proof guide-array, patent design.- Laser-engraved keycap symbols or high quality UV silk screen printed keycap symbols

-Damaged keys can be easily replaced and hence save the replacement cost 

-Detachable cable, using RJ-45 connector, USB Interface  -All keys can be programmed with 255 characters-Provides multi-level programming -Provides for a variable time delay, of 0.5sec per interval-Support PS/2 programming in DOS, Windows9X, Me, 2K, XP-All programmed data are stored in the keyboard EEPROM.

Compact POS Keyboard

FEATURES:-64 fully programmable keys-QWERTY section can be on the top four rows or on the bottom four rows

-All keys are made of POS graded membrane keys-Keyboards are backed up by 1.2mm thick metal frame-Detachable cable, using the tough RJ45 connector-Available in USB, PS/2 Interface-Programmable keys can be programmed with 255 characters-Provides multi-level programming-Provides for a variable time delay in each programmed string

   -Support PS/2 programming in DOS, Windows9X, Me, 2K, XP

112 Key POS keyboard

66 Key POS keyboard

51 Key POS Keyboard

FUNCTIONING OF KEYBOARD

KEYBOARD CONTROLLER

KEYBOARD

BUFFER

SYSTEM SOFTWARE

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

ANY QUESTIONS PLEASE ?

Thank you