NEC Versa 550 Series Service Manual page 5

tpi tracks per inch
UART universal asynchronous
receiver/transmitter
V volt
Vdc volts, direct current
VESA video electronics standards
association
VFO variable frequency oscillator
VGA Video Graphics Array
VLSI very large-scale integration
VRAM virtual RAM
W watt
f microfarad
PD microprocessor
s microsecond
ohm
Abbreviations xv