All Flashcards
1
Q
What are features of IBM’s Personal System/2 computer that went on to become standards? What year was it released? What generation was it? Price? Specs of lower-end model?
A
The 16550 UART (serial port), 1440 KB 3.5-inch floppy disk format, 72-pin SIMMs, the PS/2 keyboard and mouse ports, and the VGA video standard. April 1987 3rd $2295 ($4642 in 2014 dollars) 8Mhz, 640k of RAM, 20MB hd, 640x480 resolution
2
Q
A
TRS (Tip Ring Sleeve) Phone connector.
Modern phone connectors are available in three standard sizes. The original 1⁄4 in (6.35 mm) version dates from 1878, when it was used for manual telephone exchanges, making it possibly the oldest electrical connector standard still in use.
