Technical Support Fundamentals (Week 1) Flashcards
What is the Digital Divide?
The difference in digital literacy skills from one to another.
Algorithm
A series of steps that solve specific problems
Cryptography
The art of solving/decoding and writing codes.
ENIAC
Electronic Numerical Integrator and Computer: The earliest form of general purpose computers.
Open Source
Freely distributed, modified and shared.
What is the Binary System?
The communication a computer uses, also known as a base-2 numeral system.
How many numbers/bits are grouped together in Binary?
8
What is a bit?
A binary digit
What is a grouping of 8 bits considered?
A byte
How many characters can you have with binary?
256
Character Encoding
Assigns our binary values to characters so that we as humans can read them.
ASCII
Oldest character encoding standard used to represent the English alphabet, digits, and punctuation marks
UTF-8
Most prevalent encoding standard used today - includes the ASCII table but also allows usage of a variable amount of bytes to allow production of over a million code points.
Logic Gates
Allows transistors to do more complex tasks Like deciding where to send electrical signals depending on logical conditions.
How do you count in Binary?
128 64 32 16 8 4 2 1
0 0 0 0 0 0 0 0
The addition of a on light switch all defined by 1’s and 0’s. This is the abstraction of what goes on.
How many possibilities of binary are there?
255 different variations.
Abstraction
Take a relatively complex system and simplify it for human use - hides complexity by offering common interface.
What are the 4 layers of computer architecture and what do they mean?
User: Who interacts/maintains computer - most important.
Hardware: The physical components of a computer
Operating system: Allows hardware to communicate with the system
Software: How humans interact with computer
