2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Category1 Computers Category2 CPU Category3 RAM Category4 Secondary Storage Category5 Information Representation

Question 1.1 What is the definition of a computer?

Answer 1.1 An electronic device which operates within a binary digital system and has 4 functions.

Question 1.2 What are the four functions of a computer?

Answer 1.2 The four functions of a computer are: 1. Accept data 2. Process data 3. Produce output 4. Storage

Question 1.3 What is the difference between data and information?

Answer 1.3 Data are the isolated facts that are input into the computer. Information is processed data.

Question 1.4 What is a port?

Answer 1.4 A port is a connection for a peripheral device such as a printer or a modem.

Question 1.5 Define a binary digital system.

Answer 1.5 A binary digital system refers to a system which works within 2 states, in this case on/off. This on/off correlates to the binary digits of a 1 or a 0. These two digits are the only two digits a computer can interpret.

Question 2.1 The CPU is: a.) the microprocessor b.) the system unit c.) permanent storage

Answer 2.1 The CPU is a) the microprocessor. It only communicates with RAM within the computer. Its primary function is to process instructions with the machine cycle steps of fetch, interpret, and execute. It has no storage except small temporary register storage. The system unit is the “tower” which houses much of the computer hardware.

Question 2.2 CPU speed is measured in: a.) kilobytes b.) gigabytes c.) megahertz

Answer 2.2 The answer is c.) megahertz and refers to the number of instructions (in million units) the CPU can process per second.

Question 2.3 What are the two parts of the CPU?

Answer 2.3 The two parts of the CPU are: the ALU - arithmetic logic unit the control unit.

Question 2.4 What is the definition of a register?

Answer 2.4 A register is fast accessing storage inside the CPU.

Question 2.5 What is the relationship of the parts of the CPU to the machine cycle?

Answer 2.5 The control unit performs the fetch/interpret part of the cycle; the ALU performs the execute part of the cycle.

Question 3.1 RAM is: a.) permanent storage b.) temporary storage for data awaiting processing by the CPU c.) the same as cache

Answer 3.1 RAM is temporary storage for instructions and data awaiting processing by the CPU. Cache is a type of fast accessing intermediate memory. It is smaller than RAM and is searched first before RAM access to speed memory access.

Question 3.2 The smallest unit of storage in the computer is: a.) bit b.) byte c.) word size

Answer 3.2 The answer is a.) bit. A byte is composed of 8 bits. Word size refers to how many bytes a register can hold.

Question 3.3 The largest unit of storage in the computer out of the 3 below is: a.) kilobyte b.) gigabyte c.) megabyte

Answer 3.3 The answer is b.) gigabyte.

Question 3.4 What is the definition of cache?

Answer 3.4 Cache is fast accessing intermediate memory.

Question 3.5 Which of the following is true about cache: a.) permanent and large storage b.) speeds up the operations of the computer c.) increases the cost of the computer (Are you finding more than one answer for this question?)

Answer 3.5 There is more than one answer. Both b and c are correct. Cache will speed up computer operations and increase the cost of the computer.

Question 4.1 Secondary storage is for: a.) permanent storage of large amounts of data and information b.) consists of disks and drives c.) both a and b

Answer 4.1 The answer is c) both a and b. Secondary storage is additional permanent storage in the form of: floppy disksCD’s hard disksmost recently DVD’s Its value is in its capacity to storage large amounts of data and information.

Question 4.2 What are the two parts of secondary storage? a.) sectors and tracks b.) disks and drives c.) floppy and hard drives

Answer 4.2 The two parts of secondary storage is: b.) the disk which stores the information and the drive which reads the disks Sectors and tracks are the parts of the disks. Floppy and hard drives are only two of the four types of secondary storage.

Question 4.3 Which of the following works as magnetic storage? a.) floppy and hard disks b.) CD’s c.) DVD’s

Answer 4.3 The answer is a) floppy and hard disks store information using magnetic properties. CD’s and DVD’s store information using light.

Question 4.4 Of the following, which type of secondary storage is the largest? a.) CD’s b.) floppy disks c.) hard disks

Answer 4.4 The answer is a) CD’s will store the largest amount of information.

Question 4.5 What is a disk crash?

Answer 4.5 A disk crash occurs when the read/write head, (the arm that sits over the disks and reads it) touches the disk and damages the information surface.

Question 5.1 To represent numbers in the computer a _________ system is used? a.) base 2 b.) base 10 c.) ASCII code

Answer 5.1 The answer is a.) base 2. Base 10 is the number system we use everyday.

Question 5.2 How are letters represented by binary digits?

Answer 5.2 Letters are given a numeric code by the ASCII system. For instance, A is represented by 54.

Question 5.3 How are graphics represented by a binary digital number?

Answer 5.3 Graphics are represented by numbered pixels.

Question 5.4 Can you label the base 2 conversion table?

Answer ’s32’s16’s8’s4’s2’s1’s

Question 5.5 Can you convert the binary number 1101 to a base 10 number?

Answer ’s32’s16’s8’s4’s2’s1’s = 13 in base 10