Computer architecture

Question 1

what does the mantissa store

Answer 1

The precision of the number

Question 2

what is 11101011

Answer 2

215

Question 3

what is 127 in binary code

Answer 3

01111111

Question 4

what does the exponent store

Answer 4

the range of the number

Question 5

if you had the number 6.0968796876897 x 10 to the power of 17 what would the exponent be

Answer 5

17

Question 6

if you had the 6.0968796876897 x 10 to the power of 17 what would the mantissa be

Answer 6

6.0968796876897

Question 7

Describe how extended ASCII code (8-bit) is used to represent characters.

Answer 7

Each character is given an 8-bit ASCII Code.

Question 8

how do vector graphic photos store pictures

Answer 8

Vector graphics store a picture by storing each objects attribute

Question 9

how is a rectangle stored using vector graphics

Answer 9

height, width, x, y, fill colour, line colour

Question 10

how is an ellipse stored using vector graphics

Answer 10

cx, cy, rx, ry, fill colour, line colour

Question 11

how is a line stored using vector graphics

Answer 11

x1, y1, x2, y2, line colour

Question 12

how is a polygon stored using vector graphics

Answer 12

x1, y1, x2, y2, x3, y3, fill colour, line colour

Question 13

how are bit mapped photos stored

Answer 13

in binary each pixel in a 2d grid the Number of bits per pixel depends on the number of colours in the image

Question 14

what is the purpose of the control unit

Answer 14

controls the sequencing of fetching, decoding and executing instructions.

Question 15

what is the purpose of the arithmetic logic unit (ALU)

Answer 15

performs all calculations and logical operations

Question 16

what is the purpose of registers

Answer 16

temporarily stores memories within the processor

Question 17

why are memory locations given a unique address within RAM

Answer 17

so that the computer can read and write data to that location correctly

Question 18

what are the two different types of buses

Answer 18

Address bus and Data bus

Question 19

what is the function of the Address bus

Answer 19

this identifies the memory location that is going to read from or written to.

Question 20

What is the data bus

Answer 20

the transfers data between the memory and the memory and vice-versa

Question 21

what are the two types of translators used to translate high level language to binary

Answer 21

compiler and interpreter

Question 22

how does an interpreter translate High Level Language to computer code

Answer 22

translates the program one line at a time into machine code and executes immediately. Machine code is not retained, so must be translated each time.

Question 23

how does a compiler translate High Level Language to computer code

Answer 23

translate whole program, and then save machine code version. Translate code can be run again, and again.

Question 24

what is a compiler good for

Answer 24

translating programs that are already ready for release

Question 25

what is an interpreter good for

Answer 25

testing the translated could to make sure their are no errors within the code

Question 26

How many computer systems are in use around the world

Answer 26

2 billion

Question 27

what are three ways that we can reduce energy usage by altering settings on your monitor

Answer 27

reduce your brightness, activate efficiency mode, use an energy efficient monitor

Question 28

what is one way the we can reduce energy usage using power down settings on a monitor

Answer 28

making sure that your computer powers down after a period of time

Question 29

how is leaving computers o standby good for reducing energy usage

Answer 29

it limits the energy consumed by the computer during standby

Question 30

what is the role of a firewall

Answer 30

A firewall prevents hackers from accessing the computer by deciding whether or not they should be gained access based on incoming data packets against a set of rules

Question 31

everything that is stored in a computer is stored using what

Answer 31

Binary

Question 32

what are the mantissa and the exponent stored as

Answer 32

Two separate numbers

Question 33

What is the relationship between the amount of bits used to store the mantissa and the precision of the number

Answer 33

The greater number of bits used to store the mantissa the more precise the number will be

Question 34

What is the relationship between the amount of bits used to stow the exponent and the range of the number

Answer 34

The greater number of bits used to store the exponent the greater the range of numbers can be represented