| A | B |
|---|
| The memory bus data "highway" is used to transfer data between the | RAM and the CPU. |
| Unlike DIMMs and SIMMs, RIMM modules use only the | Direct Rambus Memory Chips (RDRAM). |
| Insert the DIMM module | straight into the slot |
| The SIMM module is inserted | at an angle of about 45 degrees. |
| Each bank of memory for a SIMM has | two sockets |
| 168-pin | Dual In-line Memory Module (DIMM) |
| 72-pin | Single In-line Memory Module (SIMM) |
| One way to dissipate heat from processors is to use | the heat sink and cooling fan. |
| Only on Pentium II processors is the fan attached | before the CPU installation. |
| Processors that come with the fan and heat sink already attached to them | boxed processors |
| Slot 1 is the Single Edge Contact (SEC) interface used only by the | Intel Pentium II processor family. |
| socket A | AMD Athlon and Duron chips |
| Socket 370 | Celeron and some Pentium II and Pentium III chips |
| Almost all socket 7 systems make use of the | Zero-Insertion Force (ZIF) |
| The processor chip is always marked at | pin-1 |
| Most motherboards are flexible enough to handle a variety of | CPUs |
| If the proper voltage is not set, | total damage to the system could occur, or the whole system will never operate correctly. |
| Dual voltage means that two separate voltages, | a core voltage and an I/O voltage, are required for these CPUs to function. |
| Hardware settings are made using | mini jumper connectors on the motherboard. |
| Jumpers are devices that bridge pins on circuit boards. | bridge pins on circuit boards. |
| Removing or inserting jumpers on a set of pins will | enable or clear a given option, |
| Always turn off the power and unplug the power cord from the computer before | changing jumpers. |
| Usually, the colored wire(s) in a power cable are positive and the white or black wire(s) | are ground or negative. |
| The ROM BIOS and CMOS chip contain the software that sets and records the | master configuration for all components in the system, including those on the motherboard and the logic chip sets. |
| The BIOS interface can be keyboard driven, or it can be | graphical and mouse driven |
| Care must be exercised to ensure the CPU being used supports both | the BUS speed and CPU clock speed. |
| A motherboard location map shows where the | hardware and major components are located on the motherboard. |
| The power supply unit provides electrical power for | every component inside the system unit. |
| The AT power supply has | two 6-pin motherboard power connectors (P8/P9), |
| ATX power supplies use | a single 20-pin power connector (P1) |
| It is important to note that the | ventilation characteristics of some tower units tend to be poor. |
| the form factor simply describes the general layout of the computer case, | the positioning of the slots in the case, and the type of motherboard the case will accommodate |
| When purchasing a tower or desktop it is recommended that the unit conforms to the ATX standard and has | at least a 250-watt power supply (300 watts is ideal). |
| A static charge of only 200 volts is sufficient to | damage a computer component. |
| ESD is probably the greatest problem when a user is | unwrapping newly purchased computer parts |
| Remember that just because a discharge cannot be felt does not mean | it cannot harm a computer component. |
| A computer monitor may store up to 25,000 volts, so users should | avoid opening one unless they are trained to do so |
| Make sure the power is off and the | power plug has been removed when working inside the computer. |
