TAILIEUCHUNG - The PC Doctor's Fix-it-Yourself Guide- P30

The PC Doctor's Fix-it-Yourself Guide- P30: A technical director for a UK-based computer company who teaches such courses as Caring for Your PC has developed prescriptions for treating sick PCs. Arguing the benefits of fixing it yourself rather than relying on experts, his mission is to empower users with trouble- shooting and safe repair skills. | CHAPTER 14 Connections 289 Repairing Serial Ports If you have a damaged serial port usually in the form of damaged pins you won t be able to use the port. PC DOCTOR S ORDER Never use a damaged serial port as this might damage your hardware. There are two possible avenues open to you Replacing the port On some of the older motherboards the port is replaceable because the ports are on a card in the expansion bay and have leads that plug onto the motherboard. However most modem motherboards have the ports built directly onto the motherboard meaning that they aren t replaceable. Adding new ports See the next section Adding Serial Ports If you have more devices than ports you ll either have to remove devices and only hook them up when required or add more ports. Adding ports isn t difficult and you can do it one of two ways Add a USB-to-serial port adapter. Add a serial port expansion card. Both of these solutions are available from PC outlets. Both are good solutions but an expansion card is a more permanent solution. The adapter solution is more short term or suited to situations where you might want to move the device from one system to another. The Parallel Port The parallel port is the port that connects most printers to PCs. The port and connector look like this 290 The PC Doctor s Fix-It-Yourself Guide Again USB has in some ways taken over from the parallel port because it is both faster and more flexible. However for most home needs connecting a printer to the PC via the parallel port is an ideal setup. Generally printers don t come with cables and if you had an old printer you ll have a cable available if you want a USB cable you ll have to buy one. FIX-IT-YOURSELF HOME REMEDY If you are finding that the transfer offiles to the printer from your PC is slow and you have the option to use a USB connection on your printer then change to using USB for better performance Signs of Trouble with Parallel Ports The sign of trouble is similar to that of problems with .

• Phần cứng
• sửa chữa máy tính
• sổ tay phần cứng
• MainBoard
• thiết bị máy tính
• thiết bị mạng
• lắp ráp máy tính
• Phần cứng máy tính
• lỗi máy tính
• hệ thống mạch máy tính
• điện máy tính
• Tài liệu máy tính