ASCII
American Standard Code for Information Interchange is digital representation for of all the characters on a computer keyboard
Decimal
base 2 has digits 0 and 1
Bit
A Bit: Binary Digit can have one of two values, usually represented as 0 or 1.
Byte
a group of eight bits. One byte can represent any key on a keyboard.
Cache (memory)
volatile internal memory optimized for speed.
Computer
A digital electronics device that combines hardware and software to accept the input of data and then process and store the data to produce some useful output.
CPU
Central Processing Unit: sometimes refered to as the heart of the computer.
The number system used by humans: base 10 has digits 0 1 2 3 4 5 6 7 8 9
Digital literacy
Digital literacy refers to an understanding of how computers represent different types of data with digits and how the usefulness of that representation assists people in leading productive lives.
Digitize
transform information into a digital representation.
Technology Ecosystems
Different types of devices are designed to work together.
Hardware
the tangible parts of the computer that take up physical space.
Hexadecimal (Hex)
A number system: base 16 has digits 0 1 2 3 4 5 6 7 8 9 A B C D E F
Input
anything that a computer can collect and store.
Media (storage)
hard drives, DVDs, magnetic tape are slower but are not volatile.
OCR
Optical Character Recognition: identifies the text in an image and transforms it to ASCII representation.
Octal
A number system: base 8 has digits 0 1 2 3 4 5 6 7
Output
the results of the processing
PC: Personal Computer
General-purpose computer designed to meet the many computing needs of one individual.
Platform (computing)
Describes a computer’s architecture in terms of hardware and software
RAM
Random Access Memory: volatile memory optimized for speed.
Register
temporary storage (memory) for data that is directly accessible to the central processing unit
Server
A powerful computer that often utilizes many processors to provide services to many users simultaneously over a network.
Software
the electronic instructions that tell the computer what to do.
Supercomputer
the most powerful type of computer, often utilizing thousands or even tens of thousands of processors to solve the world’s most difficult problems.
Wearables
clothing and accessories that incorporate digital technologies. They include smartwatches, bracelets, and glasses.
Terms to know