Follow @ASM_Educational Source by Wikipedia Monitor Connectors: · If you are using a Monochrome / CGA/ EGA monitor, it is a digital monitor and will have a DB-9 Male connector that plugs into a digital adapter. · If you are using a VGA/ SVGA monitor, it will have a male DB-15 connector that plugs into… Read more »
Posts Categorized: CompTIA A+
Follow @ASM_Educational Source by Wikipedia A bus is a set of signal pathways that allow information to travel between components inside or outside of a computer. Laptop Buses PCMCIA or PC Card Personal Computer memory card international association is a type of bus use for laptops. There are different types of cards and you primarily… Read more »
Follow @ASM_Educational Source by Wikipedia A bus is a set of signal pathways that allow information to travel between components inside or outside of a computer. Other Types of Bus USB USB or Universal Serial Bus is an external bus that most popular form of bus use today USB is hot swappable USB can daisy-chain… Read more »
Follow @ASM_Educational Source by Wikipedia A bus is a set of signal pathways that allow information to travel between components inside or outside of a computer. Types of Bus External bus or Expansion bus allows the CPU to talk to the other devices in the computer and vice versa. It is called that because it’s external… Read more »
Follow @ASM_Educational ComputerCableStore When talking about cable pinouts we often get questions as to the difference in Straight-through, Crossover, and Rollover wiring of cables and the intended use for each type of cable. These terms are referring to the way the cables are wired (which pin on one end is connected to which pin… Read more »
Follow @ASM_Educational Source Quizlet What are three common problem areas with laptops? Displays Storage devices and RAM Power and input devices What tasks are associated with verifying work order information? Troubleshooting What are the three possible areas that a technician must check for printer errors? The device Cable connection The… Read more »
Follow @ASM_Educational Source Quizlet Most often, what is the reason for a need for advanced troubleshooting? It means that the probable cause is difficult to diagnose What are the six steps of troubleshooting? Identify the problem Establish a theory of probable cause Test the theory to determine the cause Establish a plan… Read more »
Follow @ASM_Educational Source Learning About Computers What are binary numbers? The binary number system is when only two numbers are used – 0 and 1. It is also called base 2. The computer number system is base 2. Our number system is referred to as decimal or base 10 because we use 10 digits… Read more »
Follow @ASM_Educational Source Learning About Computers To install a power supply is really quite easy. It fits in the top back of the case. First, orient the holes on the power supply to those on the case. Then, place the unit in the space provided and slide it in until the screw… Read more »
Source Computer Hope As you can see in the picture below, your left-hand fingers should be placed over the A, S, D, and F keys and your right-hand fingers should be placed over the J, K, L, and ; keys.
Source: Adopted From www.computerhope.com 1. A thermal impact printer or electrothermal printer is a printer that uses heated pins to “burn” images onto heat-sensitive paper.
Source: Adopted From www.computerhope.com The most popular printer for home computer users that prints by spraying streams of quick-drying ink on paper. The ink is stored in disposable ink cartridges, often a separate cartridge is used for each of the major colors.
Source: Adopted From www.computerhope.com Similar to a laser printer, LED printers are non-impact but use a light-emitting diode instead of a laser in the printhead.
Source: Adopted From www.computerhope.com First developed at Xerox PARC by Gary Starkweather and released in 1971, a laser printer is a printer that utilizes laser technology to print images on the paper.
Source: Adopted From www.computerhope.com 1. The term Dot matrix refers to the process of using dots to form an image. In a dot matrix image, the image quality is determined by the number of dots per inch.
Source: Adopted From www.computerhope.com Alternatively referred to as a Multifunction printer(MFP), AIO is short for All-In-One. It is used to describe a hardware device such as an all-in-one printerthat is a printer, fax, and scanner all in one device.
Source: Adopted From www.computerhope.com A printer is an external hardware output device responsible for taking electronic data stored on a computer or computing device and generating a hard copy of that data.
Source: Adopted From www.computerhope.com A riser board is a circuit board that gives a computer motherboard the option for additional expansion cards to be added to the computer.
Source: Adopted From www.computerhope.com Almost all laptops can connect to an external display and have the laptop display sent to that external display instead of, or in addition to, the laptop screen. Examples of an external display include a CRT monitor, flat panel display, projector, or TV.
Source: Adopted From www.computerhope.com Unlike a desktop computer, laptops and other portable computers often do not offer many upgrade options. Below is a listing of common laptop upgrade questions and the answers to each of the questions regarding laptop and portable computer upgrades.
Source Computer Hope The word “virus” is often used as a common term for all malicious programs, but technically a virus is a program or code that attaches itself to a legitimate, executable piece of software, and then reproduces itself when that program is run.
Spyware can invade your privacy by recording, passing on and abusing your personal details – including credit card details – all of it behind your back.
Source: Adopted From www.bullguard.com An essential guide on computer worms and how they actually work A computer worm is similar to a computer virus, but unlike a virus it does not need to attach itself to an existing program.
Source: Adopted From www.bullguard.com All the information you need on rootkits and how to remove them
Source: Adopted From www.myturbopc.com “Malware” is short for “malicious software” – computer programs designed to infiltrate and damage computers without the users consent.
Source: Adopted From www.computerhope.com Find how much RAM is installed and available in Windows 8 and 10
Source: Adopted From www.computerhope.com A game’s online performance can be attributed to many factors. Below is a listing of some of the different causes of why an online game may be slow or laggy.
Source: Adopted From www.computerhope.com Tip: This page only covers an overall slow computer and not a computer that has a slow boot up or slow Internet.
Source: Adopted From www.computerhope.com A slow Internet connection can be caused by any number of reasons. Below is a short list of some of the more common reasons your Internet connection may be slow.
Source: Adopted From www.computerhope.com A slow Microsoft Windows boot up can be caused by a number of different issues. The following document contains various suggestions and tips that can help improve the overall speed of your computer’s startup.
A bad computer motherboard or CPU can cause an assortment of different issues on your computer. Below are just a few of the possible issues you may encounter. It is important to remember that the issues below can also be caused by more than just a bad motherboard and CPU.
A heat sink is an electronic device that incorporates either a fan or a peltier device to keep a hot component such as a processor cool.
A hardware device that keeps the overall computer or a computer device cool by circulating air to or from the computer or component. The picture is an example of a fan on a heat sink.
A chipset is a group of microchips that are designed to work with one or more related functions that were first introduced in 1986 when Chips and Technologies introduced the 82C206.
The BIOS and CMOS are often times thought to be the same thing, but they are not.
Southbridge The southbridge is an IC on the motherboard responsible for the hard drivecontroller, I/O controller and integrated hardware. Integrated hardware can include the sound card and video card if on the motherboard, USB, PCI, ISA, IDE, BIOS, andEthernet.
Short for super input/output or Super I/O, SIO is anintegrated circuit on a computer motherboard that handles the slower and less prominent input/output devices shown below.
Less commonly referred to as the Centronics interface or Centronics connectorafter the company that originally designed it, the port was later developed by Epson.
Originally known as the Analog-to-Digital port (A-to-D port), the as a game port, joystick port, or game control adapter is a 15-pin connector port first found onIBM computers in 1981.
If your computer is losing its time or date settings, or you are receiving a messageCMOS Read Error, CMOS Checksum Error, or CMOS Battery Failure, the CMOS battery needs to be replaced. To do this, follow the steps below.
Alternatively referred to as a Real-Time Clock (RTC), Non-Volatile RAM (NVRAM) or CMOS RAM, CMOS is short for Complementary Metal-Oxide Semiconductor.
There are many types of expansion cards that can be installed in a computer, including sound, video, modem, network, interface card, and a number of others. In many cases, these expansion cards will fit in a slot in the computer called a PCI slot.
Alternatively referred to as a bus slot or expansion port, an expansion slot is connection or port located inside a computer on the motherboard or riser board that allows a computer hardware expansion card to be connected.
Power Supplies Okay, now that we’ve tested our AC outlet and put some protective power devices into play, let’s go ahead and talk power supplies.
You may not typically handle the insides of your computers, but if your business requires knowledge of Central Processing Units (CPU), then you’ll also need to learn about CPU sockets
Computer port In computer hardware, a port serves as an interface between the computer and other computers or peripheral devices.
What does a hard drive do? Storage is the hard drive’s responsibility. Everything you keep on your computer is on a hard drive.
What Is Memory, or RAM? System memory, frequently called main memory or RAM (Random Access Memory), is a type of computer memory that can be accessed randomly.
Definition – What does Malicious Software (Malware) mean? Malicious software, commonly known as malware, is any software that brings harm to a computer system. Malware can be in the form of worms, viruses, trojans, spyware, adware and rootkits, etc., which steal protected data, delete documents or add software not approved by a user.
Wireless encryption protocols include: