Epson 500 Series - Manual (Page 109)

Nicad
Nickel cadmium. A type of battery used in the ActionNote 5OO series.
NiMH
Nickel-metal-hydride A type of battery used in the Action Note 500
series.
Numeric coprocessor
See Coprocessor.
Numeric Keypad
The embedded numeric keypad in the Action Note keyboard, which
You can activate either by turning on the Num Lock function or by
holding down the Fn and Shift keys.
Parallel
A way of organizing communications between two pieces of
computer equipment, in which the signals that make up each
character are sent simultaneously. See also Serial.
Passive matrix
The type of LCD display on your ActionNote. A single element in the
display (a resistor or capacitor) powers an entire row or column of
pixels on the screen.
Pixel
One spot or picture element out of thousands that form
computer screen.
Port
An Input/output connection on a computer to which you can attach a
peripheral device.
Glossary 5