DEFINITIONS OF FREQUENTLY - USED ACRONYMS

ACE- Asynchronous Communications Element

ALU - Arithmetic Logic Unit

ASCI - American Standard Code for Information Interchange

ADC -Analog to-Digital Converter

BCD - Binary Coded Decimal

BIOS - Basic Input Output System

BIU - Bus interface Unit

BPNF - Begin/positive /Negative/Finish

Brk - Break

CAS - Column Address Strobe”’ -

CCD - Charge Coupled Devices

CE - Chip Enable -

CERDIP - Ceramic Dual-ln-Line Package

CFM - Cubic Feet per Minute

CMOS -Â Complimentary Metal Oxide Semiconductor

CPU - Central Processing Unit

CRT - Cathode Ray Tube

CRTC - CRT Controller

CS - Chip Select

DAC - Digital-to-Anaiog Converter

DCE - Data Communications Equipment

DED - Darkness Emitting Diode

Dl - Data Input

DMA - Direct Memory Access

DO - Data Output

DIE - Data Terminal Equipment

EPROM - Erasable Programmable Read Only Memory

IIL - Integrated injection Logic

1C - Integrated Circuit

I/O - Input/Output

LCDS - Low Cost Development System

LED - Light Emitting Diode

LSB - Least Significant Bit

MOS - Metal Oxide Semiconductor

MODEM -Â Modulator - Demodulator

MRS - Mask Programmable System

MPU - NMicroprocessors Unit

MSB - Most Significant! Bit

MSi -Â Medium Scale Integration

NMI - Non-Maskable Interrupt

OE - Output Enable

PC - Printed Circuit

P!C - Programmable Interval Controller

PIT - Programmable Interval Timer

PPI - Programmable Peripheral Interface •

PROM -Â Programmable Read Only Memory

RAM - Random Access Memory

RAS - Row Address Strobe

R /W - Read /Write

RMW - Read / Modify/Wnte

SE - Sense? Enable
TSP - Tri-share Port

TTL -Transistor - Transistor Logic
WE - Write Enabie