Table of Contents Table of Contents 1 List of Figures 1 Type chapter title (level 3) 3 Type chapter title (level 1) 4 Type chapter title (level 2) 5 Type chapter title (level 3) 6 Outside of the System Unit A desktop computer consists of a computer system unit, a keyboard, a mouse, and a monitor. These are also input devices which are the devices used to input data in the computer or used to provide data and control signals to an information processing system. The computer system unit is the enclosure for all the other main interior components of a computer. The primary function of the computer system unit is to hold all the other components together and protect the sensitive electronic parts from the outside elements. …show more content…
A typical computer case is also large enough to allow for upgrades, such as adding a second hard drive or a higher-quality video card. It is relatively easy to open up a computer system unit to replace parts and install upgrades. A desktop’s purpose besides being an entertainment purpose for people or work material is to be upgraded or replace parts swiftly. What are all the buttons outside a computer anyway? The front side of the desktop contains the power button, an optical disk drive, an audio outlet for a pair of headphones, and a number of USB connections as shown in figure 1. The back side contains all other connections - for power, monitor, keyboard, mouse, Internet connection, and any other devices as shown in figure 2. There are typically more connections than the minimum necessary to allow for expansion. Table 1: Ports on the outside of the system unit Name of port Number Available on front Number Available on back Description of Use VGA 0 3 It is used for connecting a computer to a monitor.
VGA stands for Video Graphics Array External Hard Drive 1 0 It is a portable storage device that can be attached to a computer through a USB or FireWire connection, or wirelessly. They have high storage capacities and are often used to back up computers or serve as a network …show more content…
drives. Ethernet 0 1 Internet connection (wired) This port looks a lot like the modem or telephone port, but it is slightly wider. You can use this port for networking and connecting to the Internet. USB 2 6 Transmit or receive data. Most desktop computers have several USB ports. These can be used to connect almost any type of device, including mice, keyboards, printers, and digital cameras. They will often appear on the front and back of the computer. Power 0 1 Provides power to the computer allowing it to be functional to the user. s Microphone input 1 1 For live audio input .A microphone is a type of input device, or a device that receives information from a user. You can connect the microphone to the computer and use the computer to record sound or to communicate with another computer user over the Internet. Many computers come with built-in microphones. Audio output 1 1 For audio output. Many computers include audio ports on the front of the computer case that allow you to easily connect speakers, microphones, and headsets without fumbling with the back of the computer. Mount port (PS2) 0 1 These ports are sometimes used for connecting the mouse and keyboard. Typically, the mouse port is green, and the keyboard port is purple. On new computers, these ports have been replaced by USB. Inside the system unit There are many parts inside a computer such as graphics card, video card, processor, motherboard etc. (Shown in figure 3, 4, 5, 6, and 7) The central processing unit (CPU), also called a processor, is located inside the computer case on the motherboard (Figure 3) It is sometimes called the brain of the computer, and its job is to carry out commands.
Whenever you press a key, click the mouse, or start an application, you're sending instructions to the CPU. The CPU is generally a two-inch square with a silicon chip located inside. The CPU fits into the motherboard's CPU socket, which is covered by the heat sink, an object that absorbs heat from the CPU. A processor's speed is measured in megahertz (MHz), or millions of instructions per second; and gigahertz (GHz), or billions of instructions per second. A faster processor can execute instructions more quickly. However, the actual speed of the computer depends on the speed of many different components—not just the processor. The motherboard is the computer's main circuit board as shown in figure 8. It's a thin plate that holds the CPU, memory, connectors for the hard drive and optical drives, expansion cards to control the video and audio, and connections to your computer's ports (such as USB ports). The motherboard connects directly or indirectly to every part of the computer. Memory of a hardware
unit RAM is your system's short-term memory (see figure 9). Whenever your computer performs calculations, it temporarily stores the data in the RAM until it is needed. RAM is known as read access only .This short-term memory disappears when the computer is turned off. If you're working on a document, spreadsheet, or other type of file, you'll need to save it to avoid losing it. When you save a file, the data is written to the hard drive, which acts as long-term storage. RAM is measured in megabytes (MB) or gigabytes (GB). The more RAM you have, the more things your computer can do at the same time. If you don't have enough RAM, you may notice that your computer is sluggish when you have several programs open. Because of this, many people add extra RAM to their computers to improve. Steps to install a RAM: o Make sure your computer is completely shut down. o Lay your computer tower on its side, so that you can access the motherboard when the side panel is removed. You may need a Phillips-head screwdriver to remove the panel, or you may be able to unscrew it by hand. o Ensure that you do not have static build-up on your body. Static can damage computer parts, and can be imperceptible to a human. Ground yourself before starting o Most motherboards have 2 or 4 RAM slots. RAM sockets are typically located near the CPU, though their location may vary depending on the manufacturer or model. Refer to your motherboard’s layout diagram in your documentation if you are having difficulty locating he sockets. o If you are replacing old RAM, remove it by releasing the clamps on each side of the socket. The RAM will be released from the socket, and you’ll be able to lift it straight out of the motherboard with little to no effort. o Line up the notch in the stick of RAM to the break in the slot. Set the stick into the slot and then apply equal pressure onto the stick until the clamps on the side click and lock the RAM in. You may have to apply a fair amount of pressure, but never force it in. o Once you’ve finished inserting your RAM sticks, you can put the panel back on and screw it back in. The hard drive on your computer is where the software is installed, and it's also where your documents and other files are stored (Figure 4). The hard drive is long-term storage, which means the data is still saved even if you turn the computer off or unplug it.When you run a program or open a file, the computer copies some of the data from the hard drive onto the RAM. When you save a file, the data is copied back to the hard drive. The faster the hard drive is, the faster your computer can start up and load programs. Glossary
holds the record as the longest serving Representative in the history of the House of Representative. 84th – 115th his term from 1955 to 2015 were the dates of service.
I am a plate that is made of clay that was taken from the Earth of Japan. But before I was made into a plate I was up to the mountains near a big forest that had a Jinja on top a beautiful waterfall where water fell from the top to the bottom and sometimes flowing to rivers. But when winter comes the waterfall would freeze into shards and when the winter goes the shards and snow turn into water filling up the waterfall making a waterfall from the top to the bottom flowing with an immense amount of water to rivers and ponds that would sometimes connect with the waterfall. My maker crafted me to be used as art depicting many natural objects or buildings even sometimes people in the drawing. I am also used to hold a meal for a person who would eat the nourishment from top to bottom. Most of the time I would have fish from the ocean or rice that was farmed in flatlands on top of me.
These devices are attached to the motherboard through different connections. The output devices like monitors and printers can be used by a file server to show different files or print hard copies of files. These devices take the data from the computer and put it into a format that users can read and understand. I would like to take a moment here and go over the different kinds of monitors that a person can use as an output device. The first is the regular CRT monitors are heavy and use a lot of electric power to display objects, but are preferred by graphical artist for the color rendition. Then there are the flat panel monitors, which can use liquid Crystal Display (LCD) or a plasma display. These displays use electronically at each pixel to control the color. The input devices like a keyboards and a mouse. These inputs take the movements from the users and turn it into data that the computer can understand. (Beach,
The motherboard is the most important part of your computer. It is also one of the most compared, critiqued, and reviewed pieces of hardware. Often, on the internet, you'll find reviews and debates over which board is best or which chipset is best. The chipset controls the system and its capabilities. It is the hub of all data transfer. It is a series of chips on the motherboard, easily identified as the largest chips on the board with the exception of the CPU. Chip s...
Special Terms To understand how to build a computer, one must first understand all of the components of a computer. The case holding all of
In simple terms, it's just a storage located remotely which you can access anywhere. It's like storing your files online and accessing it anywhere while using your laptop, mobile device or another PC.
A CPU has various discrete units to help it in these tasks for example there is an arithmetic and logic unit(ALU) that takes care of all the math and logical data comparisons that need to performed. A control register makes sure everything happens in the right sequence. The motherboard is the main circuit board inside the PC. All other components are either slotted into or soldered to this board.
Processor speeds are measured in megahertz (MHz) and now come in speeds of up to 1000 MHz (1 GHz), which is very fast. This is almost ten times faster than the speed of most home computers, which average from 133 MHz to 166 MHz. Intel and AMD have been in a race to break the 1 GHz speed barrier, and the number of megahertz in the newest processors is not as significant as it was in earlier processors. For example, the difference between a 133 MHz processor and a 166 MHz processor is
All the parts go together and make a giant machine that lets you do just about anything. The first step to building your PC would be to put what you can inside the case first. Wiring it all comes later. You would put in your motherboard in the designated area in the PC Case first (There will be an area specifically for motherboards to go.) Once you fit the motherboard in, you would screw it on to the side carefully.
Computers are very complex and have many different uses. This makes for a very complex system of parts that work together to do what the user wants from the computer. The purpose of this paper is to explain a few main components of the computer. The components covered are going to be system units, Motherboards, Central Processing Units, and Memory. Many people are not familiar with these terms and their meaning. These components are commonly mistaken for one and other.
Input Devices An input device is a device that provides the computer input, for example a keyboard, without the keyboard you would not be able to type words or use the different shortcuts a keyboard provides and without a mouse you would not be able to click on anything to get you anywhere, so a computer without input devices would be mostly useless. There are many input devices to use, there are, microphones, scanners, webcams, etc. all these devices send information to the computer, categorizing them as input devices. There are many ways to use your keyboard for other than typing, for example you can use keyboard shortcuts, almost anything you can do with a mouse you can do it almost faster with your keyboard, and if you open a menu there it tells you how to use that setting on your keyboard.
on which the user draws with a special pen. As the user draws on the
It’s prime role is to process data with speed once it has received instruction. A microprocessor is generally advertised by the speed of the microprocessor in gigahertz. Some of the most popular chips are known as the Pentium or Intel-Core. When purchasing a computer, the microprocessor is one of the main essentials to review before selecting your computer. The faster the microprocessor, the faster your data will process, when navigating through the software.
In designing a computer system, architects consider five major elements that make up the system's hardware: the arithmetic/logic unit, control unit, memory, input, and output. The arithmetic/logic unit performs arithmetic and compares numerical values. The control unit directs the operation of the computer by taking the user instructions and transforming them into electrical signals that the computer's circuitry can understand. The combination of the arithmetic/logic unit and the control unit is called the central processing unit (CPU). The memory stores instructions and data.
CPU Stands for "Central Processing Unit." The CPU is the primary component of a computer that processes instructions. It runs the operating system and applications, constantly receiving input from the user or active software