Technology-Chapter 7

Question 1

digitize

Answer 1

to represent information with digits
calls for the use of 10 digits
can be placed in order

Question 2

digit

Answer 2

ten, 0-9

Question 3

player encoding

Answer 3

uses the standard symbols from music players

Question 4

refer to ! as

Answer 4

bang or star instead of using that word

Question 5

collating sequence

Answer 5

to place information ignored by using symbols (other than digits), we need to agree on an ordering for the basic symbols.

Question 6

digitizing

Answer 6

representing information by symbols-not just the ten digit symbols

Question 7

Phenomenon

Answer 7

can be anything, light , charge, magnetism, pressure, color, velocity

Question 8

Information

Answer 8

the presence or absence of a phenomenon at a specific place and time.

Question 9

Digital information is either

Answer 9

present or absent

Question 10

PandA

Answer 10

mnemonic for presence and absence, describes information that is black or white

Question 11

PandA

Answer 11

binary system

mnemonic for presence and absence, describes information that is black or white

Question 12

Bit

Answer 12

is the information produced in one PandA observation

embodies the information observed about a phenomenon (present or absent) at a specific place and time.

Question 13

Binary system

Answer 13

two possible alternatives make PandA observation this..

Question 14

Memory

Answer 14

bit definition, plus memory requires the ability to set the phenomenon to be either present or absent.
arranged inside a computer as a very long sequence of bits

Question 15

Binary number system

Answer 15

computers to represent numbers in base 2, than to use bits to represent decimal digits.

Question 16

Hexadecimal numbering system

Answer 16

hex- 16 numerals, and first six letters

Question 17

binary numbers are different from decimal numbers by being limited to two digits rather than

Answer 17

ten digits. the number of digits- the base of the numbering system- is the only difference.

Question 18

Decimal vs binary

Answer 18

decimal- we use place value-where each place represents the next higher power of 10.
1=10^0

binary-same idea but with powers of 2.
1=2^0

Question 19

radix

Answer 19

the base of a numbering system, 10 decimal and 2 for binary.

Question 20

radix

Answer 20

the base of a numbering system, 10 decimal and 2 for binary.

Question 21

95 distinct symbols are able to be used in a keyboard with ..

Answer 21

7 bits

2^7=128, more than you need

Question 22

ASCII- American Standard Code for Information Interchange

Answer 22

7 bit code, advantages:

• computer parts can be connected
• programs can create data and store it so that different programs can process it later

Question 23

Extended ASCII is a ..

Answer 23

8 bit code, now know as ISO-8859-1

Question 24

8 BITS =

Answer 24

1 BYTE

Question 25

The NATO Broadcast alphabet

Answer 25

used in air traffic communication, encodes letters as words, the words are symbols, replacing the standard spoken names for the letters

Question 26

Universal Product Codes-UPC

Answer 26

manufacturer code left side, product code right side, each side complements each other.

Question 27

Unicode Transformation Format -UTF

Answer 27

The way characters are represented for the Web and other applications requiring international information exchange.

Question 28

Metadata

Answer 28

information describing information

separate from the information that it describes

Question 29

tags

Answer 29

most common way to give metadata

Question 30

parity

Answer 30

refers to wether the number is even or odd

Question 31

even parity

Answer 31

to encode bytes using this we use the normal byte encoding

Question 32

why is byte spelt with a Y?

Answer 32

Werner Buchholz- worked for IBM supercomputer called stretch, created this to be a mass quantity of bit, common mistake to say bite, so put it as byte