Term
|
Definition
| Reducing information to a simpler form, to remove some details to focus on essential characteristics. It is typically possible to look at a system at many levels of abstraction, depending on how many detail is necessary to approach the challenge at hand. To simplify things pulling out specific differences to make one solution work for multiple problems. |
|
|
Term
|
Definition
Bytes, KB, MB, GB ,TB
A byte is a sequence of 8 bits (enough to represent one alphanumeric character) processed as a single unit of information. A single letter or character would use one byte of memory (8 bits), two characters would use two bytes (16 bits). |
|
|
Term
|
Definition
| Put another way, a bit is either an ‘on’ or an ‘off’ which is processed by a computer processor, we represent ‘on’ as ‘1’ and ‘off’ as ‘0’. 8 bits are known as a byte, and it is bytes which are used to pass our information in its basic form - characters. |
|
|
Term
|
Definition
| A byte is a sequence of 8 bits (enough to represent one alphanumeric character) processed as a single unit of information. A single letter or character would use one byte of memory (8 bits), two characters would use two bytes (16 bits). |
|
|
Term
| kilobyte - Approximately 1,000 bytes. Learn more here. |
|
Definition
|
|
Term
| gigabyte - Approximately 1,000,000,000 bytes. Learn more here. |
|
Definition
|
|
Term
|
Definition
DNS: Translates a URL into an IP address. Note that a DNS request still is conducted over TCP/IP
TCP: Breaks larger messages into multiple packets and ensures all packets are received and ordered correctly
IP: Assigns IP addresses to computers and routes packets of data to the correct address |
|
|
Term
|
Definition
| To save space, some information is thrown away |
|
|
Term
|
Definition
The dimensions by which you can measure how many pixels are on a screen.
640 x 480 |
|
|
Term
|
Definition
| Data the describs data. For example, a digital image may include metadata that describes the size of the image, number of colors, or resolution. |
|
|
