- Everybody wants their computer to be fast,…and as a result of that,…when you're looking at CPUs…everybody thinks that faster is better.…So let's talk about speed for a minute.…First of all, when we're working with CPUs,…CPUs do come with a rated speed.…So for example, this particular CPU…I have in front of me, runs at--…This is an old Pentium Four,…there's a reason we're talking about this.…And it actually has printed right on here,…1.6 Gigahertz.…Now, a hertz is a time per second,…and giga is a billion.…
So this can run at 1.6 billion cranks per second in essence.…Now the question is, is what's cranking the system?…If you see 1.6 printed right on the CPU,…it would make you think that there's like a motor in here,…or something that's driving this…and running it at 1.6 gigahertz per second.…But that's not true,…what's actually pushing this guy,…is the system crystal.…Ever seen a system crystal?…I got one right here.…Now if you take a look at this motherboard,…you see right here, this little,…little, silver, oval-shaped can right there?…
The CompTIA A+ 220-901 exam is comprised of six key parts. The first, core processing, is covered by this course. Instructor Mike Meyers explains the fundamentals of PCs, microprocessors, RAM, and BIOS. He also shows you how to set up, connect, maintain, and troubleshoot the main components of a computer.
Note: The six courses designed for the CompTIA A+ (220-901) exam preparation include core processing, core hardware, peripherals and building a PC, displays and printers, networking, and laptops and mobile devices.
We are a CompTIA Content Publishing Partner. As such, we are able to offer CompTIA exam vouchers at a 10% discount. For more information on how to obtain this discount, please download these PDF instructions.
- How do personal computers (PCs) work?
- What is a central processing unit (CPU)?
- When is random access memory (RAM) used?
- What is a basic input/output system (BIOS)?
- Installing a CPU
- Working with extensions and sockets
- Troubleshooting RAM
- Setting up a BIOS