Join Mike Meyers for an in-depth discussion in this video Power protection, part of CompTIA A+ Exam Prep (220-902) Part 2: Putting Pieces Together.
- In a perfect world, AC power is a very,…very pretty thing to look at.…Now I'm not talking about actually looking…at electricity, but I'm talking about…watching how the power moves through your system over time.…So what I want to do is, to show you…what I'm talking about, let's make a little graph, okay?…Now, on the x axis is time, and on the y axis is voltage.…And if we were to plug in and track the voltage…over time, what we'd watch is we would see…as it's going in one direction, and it builds up…to 120 volts here in the United States,…and then it drops down, and then it goes…to negative 120 volts because remember,…with AC power, the electricity is moving…back and forth through your wires.…
So then it goes back up again, back down,…and it does that 60 times per second…here in the United States.…So, AC power is very, very pretty…when everything's working right.…Unfortunately, sometimes AC power…doesn't look nearly as good.…In particular, what we have are two big problems.…Number one, are spikes, and that's when…
In Part 2, Mike Meyers helps you understand all the pieces that comprise the modern computer: RAM, power supplies, hard drives, and peripherals. Though 220-902 focuses on operating systems and software, a solid foundation in hardware will help you understand how all the pieces fit together. In Chapter 5, Mike shows how to build a basic PC, and install a fresh copy of Windows.
Details about the CompTIA A+ certification and the exam blueprints can be found at https://certification.comptia.org/certifications/a.
- Working with RAM
- Choosing a power supply
- Understanding portioning
- Implementing hard drives
- Configuring USB
- Building a PC
- Installing Windows