Class one learnt about the functions of a computer. A computer doesn't understand information but it understands data. Likewise a computer can only understand 1s and 0s.
There are many advantages to using a computer including, speed, reliability and consistency.
Dis-Advantages include: Health risks, privacy and environment effects in a computer's disposal.
Web 2.0 is the 2nd generation of interacting with the web where uses can create, edit and interact with content on the web.
System software is software that's including at the very basic level on a computer's OS. It has utilities and abilities to manage files on the OS.
Application software on the other hand has a specific task in mind. With the aim of making a task easier or more accurate. Application software also increase productivity within a business.
There are several forms of software some that are free while others must be purchased. The following are some of those categories including; Freeware, Shareware, Open-source, Public Domain, Packaged software and custom software.
Compute Uses may include using a computer for home, office or big enterprise. While small home offices may only use a computer for gaming or for creation of documents an enterprise would generally use a computer to increase productivity.
Professional Ethics
Ethics include; Moral codes, morality, ethics and virtues.
The Australian Computer Society is responsible for governing the very basic ethics that IT professionals must adhere to which include the following values: Quality of live, province of information, honesty, competency and professionalism.
Prevention of Viruses can be done by implementing firewalls, setting rules for email attachments (don't open emails from unknown senders) or signing up to a website that sends out regular virus alerts and hoax warnings.
Honeypot is another method of combating viruses. Where the honeypot is used to deliberately attract viruses and hackers.
Accesstime is the ammount of time it takes the processor to read memory.
IPS - Is the measurement used to measure the amount of instructions a processor can carry out per second.
Output devices include: Printers, audio and more recently force feedback.
Calculating the size of an image??? BMP that is.
Resolution x Depth = Filesize in bits (Convert to bytes (/8) then to KB (/1024)
Lossy is exactly what it means it looses information.
Lossless retains the information when an image is compressed or changed.
CD quality audio is stereo and is stored in digital form. The sound waves we hear are analogue and the audio we hear from a computer or electronic device is digital.
The size of an audio file is calculated by = (x2 for stereo) time x sample rate x (depth/8) = Size in MBs.
Vector graphics are complex and use mathematical forces.
Project managers are responsible for the project costing, reporting and creating a project proposal.
Success is measued by good planning, requirements meet for all stakeholders, time frame
Failure is the result of bad planning, impossible schedules and lack of funds.
Constraints are related to the quality of a project... Cost, Time, Scope = Quality.
Reduced Cost = Increased Time, lack in quality.
Enterprise computing includes; retail, wholesale, transportation and government.
Cloud computing is a service delivered through the internet.
Grid computing is a number of PCs that share services and act as one large computer.
Data is organized into layers - Files, records and characters.
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