Technology-Chapter 7 Flashcards Preview

Fall 2016 > Technology-Chapter 7 > Flashcards

Flashcards in Technology-Chapter 7 Deck (32):
1

digitize

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

2

digit

ten, 0-9

3

player encoding

uses the standard symbols from music players

4

refer to ! as

bang or star instead of using that word

5

collating sequence

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

6

digitizing

representing information by symbols-not just the ten digit symbols

7

Phenomenon

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

8

Information

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

9

Digital information is either

present or absent

10

PandA

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

11

PandA

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

12

Bit

is the information produced in one PandA observation
embodies the information observed about a phenomenon (present or absent) at a specific place and time.

13

Binary system

two possible alternatives make PandA observation this..

14

Memory

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

15

Binary number system

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

16

Hexadecimal numbering system

hex- 16 numerals, and first six letters

17

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

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

18

Decimal vs binary

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

19

radix

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

20

radix

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

21

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

7 bits
2^7=128, more than you need

22

ASCII- American Standard Code for Information Interchange

7 bit code, advantages:
-computer parts can be connected
-programs can create data and store it so that different programs can process it later

23

Extended ASCII is a ..

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

24

8 BITS =

1 BYTE

25

The NATO Broadcast alphabet

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

26

Universal Product Codes-UPC

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

27

Unicode Transformation Format -UTF

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

28

Metadata

information describing information
separate from the information that it describes

29

tags

most common way to give metadata

30

parity

refers to wether the number is even or odd

31

even parity

to encode bytes using this we use the normal byte encoding

32

why is byte spelt with a Y?

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