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Table 2
Acronym Definitions
Acronym
Definitions
LCD
Liquid Crystal Display
LED
Light-Emitting Diode
PED
PIN Entry Device
PIN
Personal Identification Number
POS
Point-of-Sale
RS-232
Serial Communication Protocol
SAM
Secure Access Module
TF
Trans Flash
UL
Underwriters Laboratories
USB
Universal Serial Bus
VPN
Verifone Part Number
(continued)
640
P
REFACE
Conventions and Acronyms
I
G
M
NSTALLATION
UIDE
7
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