Try writing a program that talks directly to the USB port, or even through a network port.
Serial port vs com port serial#
If you are a software developer, there is no kind of device that is easier to write programs for than a serial device. Serial communications actually makes it easy to interface to these other technologies, and is best viewed as a companion to other connectivity options, rather than a competitor. Instead, think of serial communications as the glue between these interface technologies and embedded microprocessors. It would be inappropriate to think of serial communications as a competitor to other communication technologies, such as USB, Bluetooth, ZigBee, WiFi 802.11 and Ethernet. And it may surprise you to learn that USB, Bluetooth, ZigBee, Wifi, and Ethernet also support serial communications. In addition, many LCD displays are interfaced to a microprocessor using serial communications, so are keypads, embedded GPS modules, touch screens, accelerators, and many of today’s sensors are supporting serial communications. It is very easy for microprocessors to communicate with each other using serial communications. Serial communications has made its home in embedded applications for good reason. So, just about every programmable microprocessor produced has hardware provisions for serial communications….and that is a LOT of chips, and this alone annihilates all the other communication standards in daily service, combined.
Serial port vs com port driver#
When coupled with a line driver chip (such as a MAX232 chip), you have the makings of a RS-232 port. Just about every microprocessor produced has a hardware device built in called a UART (Universal Asynchronous Receiver Transmitter)…and you guessed it, the UART is a technical name for a serial port. It is safe to say, there are more serial protocols in daily service than there are Ethernet cards, Routers, Hubs, Wi-Fi networks, and even Cell Phones….COMBINED! While I know this is a bold statement, lets take a look at the technologies where serial communications is still VERY ACTIVE. A home that is firmly seated, with a standard that will NEVER become obsolete. SERIAL IS THE MOST SUPPORTED COMMUNICATIONS FORMAT IN HISTORY….PERIOD.Īnd while it has lost its home on today’s motherboards, it has gradually found a new home in embedded computers and microprocessors.
Serial communications is actually more alive today than ever. In fact, its bigger now than it ever has been, and it continues to grow at an exponential rate.
It may surprise to learn that serial communications is far from dead.
But that doesn’t make the technology obsolete, stagnate, or dead. Sure, Webcams and Hard Drives are best suited for a USB port, and you aren’t likely to ever find these kinds of devices with a serial port. Its just too slow, too old, and too obsolete….and that is exactly the idea that has to be reconsidered. Webcams and Hard Drives are best connected through the USB port of a computer, and there’s no need for a serial port. After all, you can’t even buy a printer or a modem that works from the serial port of your computer anymore. A serial port is nowhere to be found on most of today’s motherboards. So, you might think serial communications is dead. Introduction to Serial Communications (RS-232)
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