3-Computer-Technology-compressed.pdf

Ms. Mary Jade C. Jakosalem, LPT, MBA COMPUTER TECHNOLOGY  WHAT IS A COMPUTER? A programmable device that stores, retrieves, and processes data. Electronic devices that accept data (input), transforms (process) that data, produce information (output), and store (storage) the resul...

Ms. Mary Jade C. Jakosalem, LPT, MBA COMPUTER TECHNOLOGY  WHAT IS A COMPUTER? A programmable device that stores, retrieves, and processes data. Electronic devices that accept data (input), transforms (process) that data, produce information (output), and store (storage) the results.  TYPES OF COMPUTERS  DESKTOP COMPUTER A computer that fits on or under a desk. It usually has a keyboard, monitor, mouse and a system unit/CPU. LAPTOP Also called as a portable computer. Runs using AC power or batteries, such as NiMH, NiCad, or Li-ion packs.  HYBRID COMPUTER Also called as a 2-in-1 PC. Comprises a screen and a detachable keyboard. Combines the functionality of a laptop computer and a tablet. It has the power of a computer but the portability of a tablet. One example is Microsoft Surface.  NETBOOK Sometimes referred to as mini notebook, mini laptop, or subnotebook. Netbook is a term coined by Intel. It describes a portable computer about half the size of a traditional laptop.  TABLET A mobile computing device designed to be held in one or two hands. Approximately the size of a hardcover book (7 inches or bigger), and resembles a large smartphone. Notebook-sized mobile computers, equipped with touchscreens. TYPES OF TABLET COMPUTERS  SMART PHONES It is a cellphone that allows you to do more than make phone calls and send text messages. Smartphones can browse the Internet and run software programs like a computer. Uses a touchscreen to let users interact with them.  WEARABLE COMPUTERS Also called as wearables. They are electronic devices worn on the human body. Common features of wearables are: always on, designed to be used while doing something (multitasking devices), can usually connect to smartphones and include networking features.  FIVE MAIN COMPONENTS NEEDED FOR A COMPUTER TO WORK MOTHERBOARD A component that connects all other components. The motherboard is a glue that holds everything. All components of a computer communicate through a circuit board (motherboard). CENTRAL PROCESSING UNIT (CPU) It is dubbed as the brain of the computer. It is a component that executes instructions from the software and hardware. GRAPHICS PROCESSING UNIT (GPU) Also called as a graphics card. Card components that make it possible for a computers to generate high-end visuals (usually used for games and 3D modelling). Communicates directly with the display monitor.  RANDOM ACCESS MEMORY (RAM) Also known as a volatile memory (because it gets erased every time the computer restarts). A temporary primary storage that stores data regarding frequently accessed programs and processes. It helps programs and games start up and close quickly.  STORAGE DEVICE Slower secondary storage that permanently stores data. Modern computers either use a Hard Disk Drive (HDD) or Solid State Drive (SSD). HDDs are made of an actual disk onto which data is stored. The disk is read by a mechanical arm. SSDs have no moving parts and are faster than a hard drive, because no time is spent waiting for a mechanical arm to find data on a physical location on a disk.  FIVE BASIC ELEMENTS OF A COMPUTER ELECTRONIC PROGRAMMABLE A computer must be able to All computers are powered follow a set of instructions by electricity. (programs) to operate. RETRIEVE STORAGE A computer must be able to retrieve the information that it has stored. Storing is meaningless if PROCESS A computer is like an you cannot retrieve files. electronic filing cabinet for it must be able to store A computer must be able to information. manipulate and transform the information it has stored.  FOUR BASIC FUNCTIONS OF A COMPUTER INPUT PROCESS It is the procedure of feeding Operation of manipulating and transforming data into something useful. A program which data into a computer. A typical is a set of written instructions tels the way to enter data into a computer how to manipulate and transform computer is using a keyboard. data into information. OUTPUT STORAGE Result of the processing function. Once Computer can save data so that data is processed into information, the it can be retrieved and used for computer must produce and present that another time. One of the great information in a form that you can understand. advantages of computers.  ANY QUESTIONS?