微机硬件组成原理期中复习题
微机硬件组成原理期中复习题
1. How many bits are in a byte?
Eight
2. Which component on the motherboard is used primarily for processing?
The CPU (central processing unit)
3. Name three manufacturers of CPUs.
Intel, AMD, Cyrix
4. What two technologies are used to manufacture microchips?
CMOS (complimentary metal-oxide semiconductor) and TTL (transistor-transistor logic)
5. What are two other names for the motherboard?
Main board, system board
6. List three types of ports that are often found coming directly off the motherboard to be used by external devices.
Serial port, parallel port, USB port
7. List three kinds of memory chips.
SIMMs (single inline memory modules), DIMMs (dual inline memory modules), RIMMs (Rambus inline memory modules)
8. What is the difference in volatile and nonvolatile memory?
Volatile memory is temporary and needs a constant electrical charge to hold data. Nonvolatile memory is permanent and holds memory even when electricity is turned off.
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微机硬件组成原理期中复习题
9. What is the measurement of frequency of a system bus and CPU? Which is faster, the system bus or the CPU?
Frequency is generally measured in Hz or MHz. The CPU is faster than the system bus.
10. List three ways that configuration information can be stored on a motherboard.
Through ROM, physical switches, or the CMOS configuration chip.
11. When is an IRQ assigned to a device or controller?
At startup
12. Give an example of a controller that can manage a single IRQ for several devices.
USB controllers
13. What is the decimal number 256 in hex?
100
14. What are the four most popular types of motherboard form factors?
15. How many power cords connect to a Baby AT motherboard?
16. Name 10 components that are contained on a motherboard.
CPU, chip set, system clock, ROM BIOS, CMOS configuration chip, CMOS battery, Two
AT, Baby AT, ATX, Mini ATX
RAM, RAM cache, system bus with expansion slots, jumpers and DIP switches, ports that are directly on the board, power supply connections
17. What was the first Intel CPU to contain external cache?
Pentium Pro
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微机硬件组成原理期中复习题
18. If you know the memory bus speed, how can you determine the CPU speed?
The memory bus X the multiplier = the CPU speed. You can use jumpers on the motherboard to set the memory bus speed or bus clock. The jumpers set the multiplier, which then determines the CPU speed or processor speed.
19. When is it appropriate to use a Celeron rather than a Pentium II in a computer system?
20. Which is more powerful, the Celeron or the Xeon processor?
21. What are the two major competitors of Intel in the CPU market?
22. What are the five voltages produced by an ATX power supply?
23. What are the four voltages produced by an AT power supply?
24. List three advantages an ATX system has over a baby AT system.
Makes it easier to add and remove components, provides greater support for I/O +5, -5, +12, and -12 +5, -5, +12, -12, and +3.3
Cyrix and AMD Xeon
The Celeron is appropriate for use in low-end multimedia 9x PCs.
devices, and lowers costs
25. What are three motherboard form factors that can be used with a compact case?
26. What are the two main types of uninterruptible power supplies?
NLX, LPX, or mini-LPX
Standby and inline
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微机硬件组成原理期中复习题
27. List four system resources that software uses to manage hardware.
28. What Windows 9x utility allows you to see the IRQ assignments made to devices?
29. Why is programming code that is stored in ROM BIOS sometimes copied to RAM? What
is this process called?
Because reading from RAM chips is generally faster than reading from ROM chips. Device Manager
IRQ numbers, memory addresses, I/O addresses, and DMA channels
The process is called shadowing ROM, or just shadow ROM.
30. What is the name of the first 512 bytes on a hard drive?
31. What are the three files required to boot Windows 9x to a command prompt?
32. Why is it dangerous to edit the Config.sys file with a word processor?
Because word processing programs place control characters in their documents that prevent the OS from interpreting the file correctly.
33. What is the purpose of Io.sys in Windows 98?
Io.sys is the first program file for Windows 9x. It contains the basic I/O software for Io.sys, Msdos.sys, and Command.com The MBR (master boot record)
real mode and is necessary to boot to MS-DOS mode.
34. Identify three things that may cause monitor flicker.
Poor cable connections, accumulated magnetic fields, electrical noise, vertical scan
frequency below 60 Hz, screen resolution set too high
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微机硬件组成原理期中复习题
35. In Windows 9x, when troubleshooting problems with a monitor, why would you enter
Safe Mode?
36. What are two other names for FireWire? What is the data throughput for FireWire?
ILink and IEEE 1394
37. How much video RAM is required to produce a resolution of 800 x 600 with 65,000
colors?
38. Give three examples of monitor screen sizes. How are monitor screen sizes measured?
14-, 15-, 17, and 21-inch screen sizes. Screen size describes the diagonal length of the screen surface.
39. Which provides better quality, an interlaced monitor or a noninterlaced monitor? Why?
40. What three colors are used to build all colors on a color monitor screen?
red, green, and blue
41. What chip controls the speed of serial ports? What Windows utility program can you use
to determine what version of this chip you have installed?
The UART chip. You can use Device Manager to determine what version of this chip you have installed.
42. Why might you choose to use ECP mode for your parallel port rather than EPP mode?
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To allow the OS to select a generic display driver and low resolution
1 MB
Noninterlaced, because it draws the entire screen on each pass
If you need greater speed
微机硬件原理期中复习
