1. All Device types for A+ Certification
| Device type | Functions |
| Workstation | Workstation is a special type computer designed for technical or scientific applications. Intended primarily to be used by a single user,they are commonly connected to a local area network and run multi-user operating systems. |
| Server | Server is a computer device that provides a service to another computer and its user, also known as the client or client personal computer(PC). In a data center, the physical computer that a server program runs on is also frequently referred to as a server. |
| Laptop | A laptop computer or notebook computer, also known as a laptop or notebook for short, is a small, portable personal computer (PC). (usually 11–17 in or 280–430 mm in diagonal size) |
| Tablet | A Tablet is portable computer that consists of a touchscreen and computing hardware, a mobile computing device that has a flat, rectangular form like that of a magazine or pad of paper, that is usually controlled by means of a touch screen, and that is typically used for accessing the Internet, watching videos, playing games, reading electronic books, etc. |
| Smartphone | A smartphone is a cellular telephone with an integrated computer and other features not originally associated with telephones, such as an operating system (OS), web browsing and the ability to run software applications. |
| Smart Device | Device that has the ability to compute. A smart device is an electronic device, generally connected to other devices or networks via different wireless protocols (such as Bluetooth, Zigbee, near-field communication, Wi-Fi, LiFi, or 5G) that can operate to some extent interactively and autonomously |
MOBILE DISPLAY COMPONENTS
Although laptops can use many types of display technologies, typical laptop displays of any type have most of the following components:
- Wi-Fi
- Antennas
- Webcams
- Microphone
- Touch screen/digitizer (if the laptop has a touch screen)
- Inverter (if the laptop has a fluorescent backlight)
Depending upon the laptop, these components may be removable from the display panel
subassembly or might be built into a subassembly that must be swapped if
any components fail.
Certification Study Notes – Video Cable Interfaces
| A+ Certification | Video Cables Notes | |
| HDMI | Known as high-definition multimedia interface and it is the most widely used video interface in the world. Lower resolution HDMI can support HD standard, but higher resolution HDMI can support up to 4k Full-Size (Type A Connector) Mini Connector (Type C) Micro Connector (Type D) Category 1: The standard HDMI that is used for video content Category 2: The high-speed HDMI that uses higher resolutions |
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| HDMI Version 2 | Higher speeds that are specified for data transfer using HDMI | |
| Display Port Interface | Used for digital displays with a high-performance replacement
● Full-Size Display Port Display Ports can support high speed data transfer over its cables starting |
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| DVI | Used to support both analog and digital outputs.
DVI A DVI A only supports analog signals, DVI D only supports digital signals, |
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| VGA | The graphic standard that used a 15-pin standard analog video interface port that would connect to the computer |
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| Thunderbolt | A display interface that is used for data transfer
Thunderbolt version 1 and 2 used a physical connector that |
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| Components to find on Exterior of a PC | |
| CD Drive | The ability to read and write information to the system using an optical device |
| Power Button | A physical button, that when pushed, sends an electrical signal from a cable directly to the motherboard that tells the computer to turn on or off |
| Audio Jack | Used to connect headphones and microphones to the computer using a 1/8th inch Mini-Jack |
| SuperSpeed USB Connectors | Used to connect other peripherals, like a mouse, a keyboard, a webcam, a printer, or other devices to a computer |
| Cooling Fan | Blows hot air out of the CPU, the motherboard, and the case which expels the extra heat out of the system to keep the component insides cool |
| HDMI Connector | Used to connect a monitor, TV, or another device for a video output display |
| RJ45 Connector | Provides net access to local area networks over a wired connection |
| SPDIF Connector | An optical connector that allows high quality audio to a surround sound system |
| Kensington Lock | Allows the ability to place a metal cable from the desk to the computer tower to ensure the computer tower is not stolen |
Part 1: A+ Program Certification Intro
