Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
The definition of the term "digital information" |
Data represented using numbers
|
|
|
First application of digital information |
Herman Hollerith invented punch cards, end of 1800s. Used to process census data. |
|
|
Problem with punch cards and tabulating machines Solution? |
All hardware, needed rewiring to change operations Added the central processing unit (CPU) wich could perform instructions stored in the computers memory. Now "digital computers" |
|
|
Integrated Circuits (ICs) Photolithography |
ICs are chips, made of silicon and closely related elements, in wich both active (transistors) and connective (wires) parts are fabricated together in a multistep process. Better than first creating components then connecting them. The technique where chip makers "print" the different parts onto the chip. |
|
|
Resistance first PCs |
Made cheaper and smaller with ICs. But still expensive and unnecessary. Mail, Internet, games and word processing later attracted people |
|
|
Start of the internet |
ARPANet used for academic purposes. Internet used primarily for mail and file transfer. Tim Berners Lee the idea where certain pages and their information could be accessible for everyone #thestart #onlyatcern |
|
|
HTTP |
Hyper Text Transfer protocol, makes sure your browser and the server interacts properly and both are aware you are trying to access a web page. Key idea is that this protocoll is universal |
|
|
Layered Software |
The layered approach in software programming means that programs on a "lower level" does simpler task closer to the hardware, while "higher level" programs performs more advanced tasks closer to the user. The key point here is that layered software allows programmers to build on the work of others without to understand the operation of their computations only how they work. |
|
|
le mot juste (right phrase or word) |
Tech support and online help manuals are more effective if you know the right terms Learning the right phrase or word is also helpful for anchoring knowledge and increasing our vocabulary |
|
|
Computer |
Also called a processor includes the CPU, small amount of memory (cache), and is connected to some input an/or output device. Variations come from where the computer is connected to, and of course the software. |
|
|
Program Software |
A program is a collection of computer instructions that implement a function or action. Software is one or more programs |
|
|
Algorithm |
A precise and systematic method for producing a specified result. |
