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