CC111 Reviewer PDF

CC111 REVIEWER **Surge Suppressor** -- is a device that protects your computer against voltage spikes. **Optical Drive -** An optical drive is a storage device that uses lasers to read data on the optical media. There are three type of optical drives: Compact Disc (CD), Digital Versatile Disc (DVD...

CC111 REVIEWER **Surge Suppressor** -- is a device that protects your computer against voltage spikes. **Optical Drive -** An optical drive is a storage device that uses lasers to read data on the optical media. There are three type of optical drives: Compact Disc (CD), Digital Versatile Disc (DVD), and Blu-ray Disc (BD). **System Fan** -- It is located inside a computer, attached to the front or back of its case. It helps bring cool air into and blow hot air out of the case. **Power Supply Unit (PSU) --** Installed in the back corner of the PC case next to the motherboard. It converts 120vac (standard house power) into DC voltages that are used by other components in the PC. **RAM --** is a volatile type of memory because whatever we store into it during the time we use the computer, would vanish completely once we turn off the computer's switch. The RAM has a tremendous impact on the speed, power, and performance of your PC. **Storage devices --** A storage device is any computing hardware and digital that is used for storing, porting, and extracting data files and objects. **Examples:** Hard Disk, DVD's CDs, Magnetic tape, Flash memory (USB memory sticks) Uses flash memory -- USB flash drive Small data storage location - BIT Port used to connect computer -- Serial port Characteristics of digital computer -- Represent data 0 & 1 Known as motherboard -- Motherboard Analog converted to digital watch -- analog to digital converter (ADC) Extinct type of computer today -- Analog Computer. Special Purpose digital computer -- Digital Watch Both process analog and digital -- Hybrid 4.65gb Used for network cards -- PC card pass Unit of measurement/lb engineering terms -- Giga Chip stores the basic system -- CMDS Not Volatile -- SSD/ADD **Computer Display Monitor --** It displays information in visual form, using text and graphics. **TYPES OF COMPUTERS** **Analog Computer --** These are almost extinct today. These are different from a digital computer because an analog computer can perform several mathematical operations simultaneously. **Digital Computers** -- They use digital circuits and are designed to operate on two states, namely bits 0 and 1. They are analogous to states ON and OFF. Data on these computers is represented as a series of Os and 1s. Digital computers are suitable for complex computation and have higher processing speeds. **Hybrid Computers --** These computers are a combination of both digital and analog computers. In this type of computers, the digital segments perform process control by conversion of analog signals to digital ones. **Supercomputer** -- A powerful computer that can process large amounts of data and do a great amount of computation very quickly. **Personal computer (PC**) -- A small computer designed for use by a single user at a time. A PC or microcomputer uses a single chip (microprocessor) for its central processing unit (CPU). "Microcomputer" is now primarily used to mean a PC, but it can refer to any kind of small computer, such as a desktop computer, laptop computer, tablet, smartphone, or wearable. **Classification of Computer** **Mainframe Computers --** Large organizations use mainframes for highly critical applications such as bulk data processing and ERP **Minicomputers -** In terms of size and processing capacity, minicomputers lie in between mainframe and microcomputers. Minicomputer are also called mid-range system or workstation **Servers --** They are computers designed to provide services to client machines in a computer network. They have larger storage capacities and powerful processors. **Supercomputers --** The highly calculation-intensive tasks can be effectively performed by means of supercomputers. **Microcomputers --** A computer with a microprocessor and its central processing unit is known as a microcomputer. They do not occupy space as much as mainframes do **COMPUTER ENVIRONMENT** A diagram showing how the user interacts with application software on a typical desktop computer. USER\