Computer Flashcards
is represented and stored in a digital binary format.
Information
is an abbreviation of binary digit and represents the smallest piece of data. Humans interpret words and pictures; computers interpret only patterns of bits.
term bit
bit can have only two possible values, a
one digit (1) or a zero digit (0).
can be used to represent the state of something that has two states. For example, a light switch can be either On or Off; in binary representation, these states would correspond to 1 and 0, respectively.
bit
Computers use binary codes to represent and interpret .
letters, numbers, and special characters with bits
A commonly used code is the
American Standard Code for Information interchange (ASCII)
. With ASCII, each character is represented by a
string of bit
For example:____: A = 01000001 ____
: 9 = 00001001
_____: # = 00100011
Capital letter
Number
Special character
can be used to represent almost any type of information digitally: computer data, graphics, photos, voice, video , and music. Interchange
Codes
This is 8 bits and is the smallest unit of measure (UOM) used to represent data storage capacity.
byte
While a bit is the smallest representation of data, the most basic unit of digital storage is the
byte
Tb
Terabyte
B
Bytes
Mb
Megabytes
Kb
Kilobytes
Gb
Gigabytes
kilobyte =
1,024 bytes
megabyte =
1,048,576 bytes
Gigabyte =
1,073,741,824 bytes
Terabyte=
1,099,511,627,776 bytes
In general, when something is represented digitally, the greater the detail, the greater the number of bits needed to represent it. A low-resolution picture from a digital camera will use around ____, and a high-resolution picture could _____.
360KB,use 2 MB or more
are typically used to measure the size or storage capacity of a device.
Kilobytes, megabytes, gigabytes, and terabytes
Examples of components and devices that use byte storage include:
random access memory (RAM), hard disk drive space, CDs, DVDs, and MP3 players.
This have a data storage capacity of approximately 700 MB.
CDs
This have a data storage capacity of approximately 4.3 GB on a single-layer disc, and approximately 8.5 GB on a dual-layer disc.
DVDs
This have a storage capacity of 25 GB on a single-layer disc, and 50 GB on a dual-layer disc.
BDs
general, when something is represented digitally, the greater the detail, the ___ the number of bits needed to represent it.
greater
It is from a digital camera will use around 360KB, and a high-resolution picture could use 2 MB or more.
low-resolution picture
is 8 bits and is the smallest unit of measure (UOM) used to represent data storage capacity.
byte
Humans interpret words and pictures; computers interpret only .
patterns of bits
