Glossary - VeriFone Vx810 Reference Manual

Application ID
An alphanumeric code that
identifies an application downloaded onto a device
from a download computer. For ZonTalk 2000
application downloads, the application ID is stored in
the CONFIG.SYS record which begins with the *ZA
x
key. A V 810 application ID can be up to 21
characters long. For VeriCentre Download
Management Module, the application ID, as well as
other CONFIG.SYS variables, may differ from those
used for ZonTalk 2000.
Application
The ordered set of programmed
instructions by which a computer performs an
intended task or series of tasks.
Application prompt
the device's display panel when power is applied to
the device, assuming that an application has already
been downloaded onto the device's memory and
authenticated by the file authentication module. The
application prompt often contains a graphical logo,
and date and time, but it can consist of anything the
programmer chooses for that purpose.
ASCII
Abbreviation for American Standard Code for
Information Interchange. A 7-bit code (with no parity
bit) that provides a total of 128 bit patterns. ASCII
codes are widely used for information interchange in
data processing and communication systems.
Back-to-back application download
process of copying the contents of one device's
application memory to another device's application
memory. A terminal-to-terminal application upload
require that the sending and receiving device be
connected to each other by a serial cable. The same
operation as a terminal-to-terminal application
upload."
Baud
The number of times per second that a
system, especially a data transmission channel,
changes state. The state of a system may represent
a bit, digit, or symbol. For a POS terminal, the baud
rate indicates the number of bits per second that are
transmitted or received by the device's serial ports or
modem.
The information shown on
The
Bit
Short for binary digit. Either of the two digits 0
and 1 in the binary number system. Also, a unit of
information equal to one binary decision. The bit is
the smallest unit of storage and hence of information
in any binary system within a computer.
Byte
A term developed to indicate a measurable
number of consecutive binary digits that are usually
operated on as a unit.
Carrier
Usually, an analog signal that is selected to
match the characteristics of a particular transmission
system. The carrier signal on a phone line is
modulated with frequency or amplitude variations to
allow a device to transmit or receive data using a
modem. A carrier signal transmits data from a host
x
computer to a V 810 modem dongle over an analog
telephone line.
Certificate
Also called a digital certificate. A digital
document or file that attests to the binding of a public
key to an individual or entity, and that allows
verification that a specific public key does in fact
belong to a specific individual.
Character
An element of a given character set. The
smallest unit of information in a record. A letter,
numeral, or other symbol to express information.
CONFIG.SYS file
A special keyed file that is
stored in device memory and which contains system
and application configuration parameters. Each
record in a CONFIG.SYS file is identified by an
alphanumeric search key. In the V
there is one password-protected CONFIG.SYS file
per file group (Groups 1–15). You can modify
CONFIG.SYS records using the keyed file editor.
Data
Information prepared, often in a particular
format, for a specific purpose. Data is to be
distinguished from applications or program
x
instructions. In the V 810, application files and data
files can be stored in RAM or flash memory.
Data entry
The process of using a keyboard, card
reader, or other device to input data directly into a
system.
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LOSSARY
x
810 file system,
V X 810 R G
EFERENCE UIDE
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