2. Mark the following statements as True or False and correct:

1. Cache memory is faster than RAM.

2. The processor looks for data in the main memory first.

3. Write-through cache is faster than write-back cache.

4. Write-back cache requires a more intelligent cache controller.

5. Most programs use instructions that are stored in sequence memory.

6. Most cache controllers transfer one item of data at a time.

7. Hardware and software disk caches work on much the same way.

2. Match the terms in Table a with the statements in Table b:

Table A

Cache hit Cache controller Cache coherency Write-through cache Write-back cache Line size

Table B

The process of writing changes only to the cache and not to main memory unless the space is used to cache new data. The amount of data transferred to the cache at any one time. The process of writing directly to both the cache and main memory at the same time. The processor is successful in finding the data in the cache. Ensuring that any changes written to main memory are reflected within the cache and vice versa. The logic circuits used to control the cache process.

2. Now study the text bellow to study this information:

7. What is the memory size of this PC?

8. What storage devices are supplied?

9. What size is the display screen?

10. How fast is the processor?

11. What is the capacity of the hard drive?

12. Which operating system does it use?

13. What multimedia features does the computer have?

HOW TO READ A COMPUTER AD.

Intel Pentium 4 processor (3GHz, 800MHz FSB) Mini-tower chassis 1 GB dual channel DDR2 SDRAM 200GB Serial ATA hard drive (7200 r.p.m.) 128MB PCI-Express video card

Integrated audio 48X CD-RW drive 19” TFT flat panel XGA (1024 x 768) monitor Microsoft Windows XP Professional

1. The main processing chip is called a “Pentium 4” that was designed and manufactured by the Intel Corporation. It operates at a clock speed of three gigahertz and has a front-side bus that operates at a speed of eight hundred megahertz.

2. A small, tall and narrow style of case containing the computer system.

3. Synchronous dynamic random access memory with a capacity of one gigabyte. It is a high bandwidth, double data rate memory.

4. A hard drive with a capacity of two hundred gigabytes that uses a type of connection interface known as a Serial ATA i.e. t has a serial data connection rather than the original parallel connection.

5. Electronics for driving the graphics output that has a memory capacity of one hundred and twenty eight megabytes and uses a type of connection interface known as PCI-Express.

6. Electronics for controlling the sound output that is built into the main electronics of the computer.

7. O compact disk read/write disk drive that operates at forty-eight times the speed of the original CD drives.

8. A nineteen inch, flat display screen made from thin film transistors with a resolution of 1024 by 768.

9. The operating system that is used to control the system.

We can describe the function of an item in a number of ways. Study these examples: Using the Present Simple ROM holds instructions which are needed to start up the computer. Used-to-infinitive, used for+ -ing form. ROM is used to hold instructions which are needed to start up the computer.

ROM is used for holding instructions which are needed to start up the computer. Emphasizing the function. The function of ROM is to hold instructions which are needed to start up the computer.

2. Match each item in Column A with its function in column B. Then describe its function in two ways:

A Item

B Function

RAM Processor Mouse Clock Flash memory key Monitor Keyboard DVD-ROM drive Cache ROM

Controls the cursor Input data through keys like a typewriter Displays the output from the computer on a screen Reads DVD-ROMs Reads and writes to electronic chips on a card Holds instructions which are needed to start up the computer Holds data read or written to it by the processor Provides extremely fast access for sections of a program and its data Controls the timing of signals in the computer Controls all operations in a computer