Computing and ICT
Contains 2 Categories
Once software has been created, it must be tested under different conditions to make sure it works. This can be achieved with white box, black box, unit, integration and system testing, as well as thorough planning and evaluation.
The number system that computers use is binary. Binary is a base-2 system as it only uses two digits, 0 and 1. A binary digit, or bit, is the smallest unit of data in computing. All data (music, images, software) processed by a computer is stored in bits. Any data or instructions sent to the CPU must first be changed into binary code, also known as machine code. Show Less
Software testing involves testing a program under various conditions to make sure it works. Even the best programmers make mistakes, so it is important that these are identified as soon as possible in the development stage so that errors can be fixed. Show Less
A basic explanation of what emails are, what the email address means and how they are sent and received. Email addresses have a domain name which is after the @ sign. The last part of the address indicates where the address is registered, such as .co.uk or .fr. Emails can be sent from an email client, which is software on a computer, or through web-based email clients that can be sent from anywhere with an internet connection. The outgoing mail server looks for the address of the inbound server. Protocols are rules that the computer follows. Simple Mail Transfer Protocol (SMTP) are the guidelines for sending mail, and Post Office Protocol (POP) are the guidelines for receiving mail. Show Less
An explanation of the reliability of websites and ways that you can check their information for accuracy. An example of the population of Australia is used. If you check a few different websites and they all say the same thing, it is most likely to be true. Websites found at the top of a search are often more popular but not always the most useful. It is worth checking the date that the website was written, who wrote it and whether it appears to be biased. Show Less
Viruses and malware are programs that can attack computers, tablets, phones and other digital devices. A virus is a small program designed to cause trouble by gaining access to your device. It can copy your personal data or slow your device down. A virus spreads by duplicating and attaching itself to other files. By combining the words 'malicious' (meaning harmful) and 'software' we get the word 'malware'. Viruses are just one type of malware. Other types include spyware, worms and trojans. Show Less