You can get a good stuff on AT Keyboard interface in the below site
http://www.beyondlogic.org/
with the topic name
101 AT Keyboard to ASCII Decoder using 68HC705J1A MCU (Ideal Keyboard BIOS
for Embedded Linux)
good day
From: Berndt Josef Wulf <[email protected]>
Reply-To: "GCC for MSP430 - http://mspgcc.sf.net";
<[email protected]>
To: [email protected]
Subject: [Mspgcc-users] Interfacing MSP430F149 to PS/2 Numeric Keypad
Date: Sun, 3 Jun 2007 21:39:01 +0930
G'day,
Has anyone used a PS/2 numeric keypad or keyboard with a MSP430? Are there
any
examples how to implement this in hardware and software?
I've got at my disposal a USB numeric keypad with a PS/2 adapter and would
like to use it to enter frequency information into a transmitter fitted
with
a MSP430F149 MCU.
cheerio Berndt
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