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8279 KEY BOARD & DISPLAY INTERFACE

To understand the architecture, the modes of operation and the interfacing techniques of the Programmable Keyboard/Display Interface-8279 by interfacing it with 8051 microcontroller.
PROGRAMMABLE  KEYBOARD / DISPLAY  INTERFACE – 8279
A programmable keyboard and display interfacing chip.
Scans and encodes up to a 64-key keyboard.
Controls up to a 16-digit numerical display.
Keyboard section has a built-in FIFO 8 character buffer.
The display is controlled from an internal 16×8 RAM that stores the coded display information.
FUNCTIONAL DESCRIPTION:
The 8279 provides this function for 8-bit microprocessors. The 8279 has two sections: keyboard and display. The keyboard section can interface to regular type-writer style keyboards or random toggle or thumb switches. The display section drives alphanumeric displays or a bank of indicator lights. Thus the CPU is relieved from scanning the keyboard or refreshing the display. The 8279 is designed to directly connect to the microcontroller bus. The CPU can program all operating nodes for the 8279.

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Features of the Trainer:
Power supply : Voltage range : AC 100V – 230V.Frequency Range : 50 – 60Hz.
Housing : It is mounted in an elegant ABS Plastic cabinet for better viewing and portability.
Dimension : 29cm x 20cm x 11cm
Weight : 1.5Kgs
This trainer is a glass-epoxy printed circuit board and all the symbols screen-printed on the front panel so that it enables the student to conduct the experiments easily
Accessories:
40-pin FRC
Computer simulated outputs and Step-By-Step detailed instructions are provided with the instruction manual.

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