Access Serial Ports With Visual BASICS .NET
No serial port on your PC? No problem! To add a serial port, attach a USB/serial adapter to a USB port. This article focuses on the PC side of serial port communications. I’ll show how to use Visual Basic .NET to access serial ports, including USB virtual serial ports.
Access Serial Ports With PICBASIC
This month, I’ll show a companion PICBASIC PRO program for a PIC microcontroller. The program detects received commands, takes requested actions, and sends responses. I’ll also show how to use an RS-422 interface to create serial links as long as 4,000 feet.
CONTROL YOUR DEVICES FROM A WEBPAGE
Of all of the millions of pages on the web, most are hosted by large servers or, at minimum, desktop PCs, but these aren't the only computers that can function as web servers. Even very small devices can serve web pages on request, including pages that display real-time information and respond to user input. The pages can either be available within a local network or an Internet connection can be added to make the pages available to anyone on the Internet.
PICK THE NETWORK PROTOCOL THAT’S RIGHT FOR YOUR DEVICE
If you have a device that you want to use in a local network or on the Internet, one of the decisions you’ll need to make is how the device will exchange information with other computers in the network. Many devices host web pages that display information and enable users to send input, but web pages aren’t the only option.