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See also these useful resources: HP connectors and link cables: The HP Cable Table: Contents of this page: • • • • • • • • • • • • • • • • • • • • • Introduction: This page describes the basics of the RS232 serial communication standard which is used by all standard PCs, most palmtop PCs (e.g. The HP 100LX, 200LX, 1000CX and 95LX, which are described in detail here) and many peripheral devices, such as modems, cellular phones, mice, scientific equipment etc. You will also get concrete advice how to connect serial devices to your HP 200LX (or similar) palmtop. General RS232 information RS232 describes the standard for serial data communication between PCs and peripheral devices, such as modems, mice etc. And between PCs.

Nowadays RS232 is replaced by USB more and more, but it is still an important standard, especially in the world of mobile devices, such as palmtop PCs and mobile phones. There are two kinds of devices (from the viewpoint of RS232 communication): DTE and DCE. DTE stands for Data Terminal Equipment and means the 'terminal devices', i.e.

The PC or a simple terminal or in our case the palmtop; in general a device with a keyboard and a screen for manual data input and output. Printers are also DTE, because they act similar to a screen. DCE stands for Data Communication Equipment, i.e. Modems, mobile phones etc.

To be honest, I cannot say for sure if mice are DTE or DCE. Does someone know? You can connect two devices with RS232 in three combinations: The usual connection is a DTE-DCE connection, e. Bedienungsanleitung Canon Mp610 Pdf Viewer. g.

If you connect a modem to your PC. This is done with a straight-through 1:1 serial cable. The other kind of common connections is a DTE-DTE connection, for instance, if you connect two PCs in order to exchange data between them. For that kind of connection you need a so-called null modem cable.