Glossary of Terms 9 - 1
Revision 1 - 07 July
1999 Event 4 TECHNICAL MANUAL
9. Glossary of Terms
Abbreviation Term Explanation
ADC Analogue to Digital
Converter
A device for converting real world (analog)
signals into digital information a micro-processor
can manipulate
BOOT BOOT System startup
CE Chip enable A select pin provided on a device to enable it to
be used in conjunction with a CS line
CE Compliance mark Equipment marked as such complies with the
European safety/EMC regulations
C-Tick Compliance mark Equipment marked as such complies with the
Australian EMC regulations
CPU Central Processing
Unit
The heart of a microprocessor or computer
CS Chip Select A connection that is asserted under certain
circumstances to select a particular device
DAC Digital to Analogue A device for generating an analogue
representation of a digital control signal
Converter
DIP Dual In-line
Package
A device package format with 2 parallel rows of
pins
EL Electroluminescent A type of backlight that uses high voltage
EPROM Erasable
Programmable
Read Only
Memory
A type of memory that is not intended to be re-
programmed in circuit
FLASH Flash RAM A type of memory very much like EPROM but
which is designed to be re-programmed in-
system enabling program updates
GAL Generic Array
Logic
A logic device that can be programmed to
perform many logic functions
$ Hexadecimal
number
The number $A is 10
(decimal)
and $F is 15
(decimal)
IRQ Interrupt Request A connection that is asserted when a device has
information ready to be accessed by the CPU
Jumper Shunt, Link A jumper is used to configure a system by
shorting a pair of pins together
LED Light Emitting
Diode
A diode that is optimised to radiate light
LCD Liquid Crystal
Display
A type of display that uses a liquid to prevent the
transmission of light
NMI Non-Maskable
Interrupt
An IRQ that cannot be ignored
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