By David Groth
I handed my three hundred sequence A+ examination the 1st time after learning this publication and the perform assessments. now not that the three hundred sequence has been retired, yet that I handed my examination on June 29, 2007; the day prior to the three hundred sequence assessments have been to retire!
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3). Their resistance level is indicated by means of colored bands painted on the resistor. 3 9 A fixed resistor Fixed resistors are color coded to identify their resistance values. They are color coded rather than having their values printed right on their bodies for two reasons. First, the resistors are only 3 ⁄4 inch long. Second, they’re cylindrical. In other words, it is rather difficult to print on them (and the print would be difficult to read at that size anyway). If you ever need to replace a resistor, you must replace it with a resistor of the same resistance level.
At the ends of the U, it has fingers that are designed to be slipped between the chip and socket. All the technician has to do is pull up on the tool and it will exert equal force on the different sides of the IC, thus safely removing the chip. 19 An IC puller Be careful when using an IC puller. It is possible to remove the socket as well as the chip if you pull hard enough. You may also damage the motherboard permanently. Flashlight Another handy tool to have is a small flashlight. You’ll know how especially handy it is when you’re crawling around under a desk looking for a dropped screw or trying to find a particular component in a dark computer case.
12. The nice part about these connectors is that there is only one orientation possible. If you try to connect them upside down or try to connect a male connector to another male connector, they just won’t go together and the connection can’t be made. com Microcomputer Electronic Components 17 Another type, the DIN-n connectors (again, the n is replaced by the number of connectors), are usually circular. S. because of their small size. For communications, there is another type, following the RJ-n specifications.
A+ Complete Study Guide by David Groth