- When we're talking about CPUs,…one of the more important topics we bring up these days…is 32-bit vs 64-bit processing.…Let's take a moment and understand what that means.…If you take a look at a typical CPU,…you'll notice that it has hundreds…and hundreds of contacts on it.…This particular CPU in my hand has over 900.…Even looking at it this close,…I can barely make out each individual contact.…Why does it have so many?…Well, part of the reason for that is…because the CPU has to talk to RAM.…Keep in mind that the CPU itself,…as he's marching through the RAM,…has to be able to pick a particular…byte of RAM that it needs to look at,…so it can load the code in and run it.…
So in order to do that it has…a special set of wires known as the address bus.…Now if you went back a gazillion years ago,…address buses were very, very small.…But today, address buses are either usually 64-bit…or 32-bit, which means 32 wires or 64 wires…are dedicated to the idea of addressing memory.…Now if you've got 32 wires, all those wires could be…
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