Not that kind of bar code

One of the computers on the manufacturing floor is having problems with the barcode reader that inventories all new products. Which of these interfaces would most commonly be used with this reader?


B) 25-pin serial



E) If she flips her hair, that means she likes you

The answer: C) USB

Although barcode readers are relatively specialized, they almost always use a very common PC interface. In many cases, you’ll find a barcode reader using one of the older mini-DIN (PS/2) or the more-common USB connection.

Want to know more? Watch “Input Devices.”

There is a wealth of Windows utilities that can be run directly from the command line or launched from the Start menu. In this video, we’ll examine utilities like telnet, ping, msconfig, dxdiag, and many more.