Protocol And Print Buffers; Figure 13 Typical Pos System - TransAct Ithaca 8000 Programmer's Manual

Transact 8000: user guide
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Communications

Protocol and Print Buffers

The following figure illustrates the communication flow from host computer to printer and
from printer to cash drawer.
Host computer
Host to
keypad
Keypad

Figure 13 Typical POS System

For the host to printer communication link, the Ithaca
parallel communications. The serial and parallel ports both follow standards developed
for the personal computer environment.
100-06908
Ithaca
Host to printer link
Cash drawer
®
8000 printer supports serial or
Rev D
®
8000 Programmer's Guide
Printer
Printer to cash
drawer
Page 269

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