1 00:00:00,000 --> 00:00:03,660 You may already know that there are many important parts inside a computer, 2 00:00:04,280 --> 00:00:06,219 but what exactly do they do? 3 00:00:06,860 --> 00:00:12,039 Let's take a look inside and learn about the various components that make a computer work. 4 00:00:12,580 --> 00:00:15,380 Whether it's a desktop computer or a laptop, 5 00:00:16,019 --> 00:00:19,300 every computer has a large circuit board called a motherboard. 6 00:00:20,539 --> 00:00:23,460 This contains some of the most important parts of the computer, 7 00:00:24,100 --> 00:00:28,679 such as the CPU, also known as the central processing unit or processor. 8 00:00:29,480 --> 00:00:32,520 The CPU can be considered the brain of the computer, 9 00:00:32,840 --> 00:00:35,920 because it processes information and carries out commands. 10 00:00:36,659 --> 00:00:40,979 Since it tends to get hot, it's covered by a piece of metal called a heatsink, 11 00:00:41,420 --> 00:00:43,659 which draws heat away from the processor. 12 00:00:44,640 --> 00:00:49,380 The motherboard also contains the computer's RAM, or Random Access Memory. 13 00:00:50,259 --> 00:00:55,200 This is the short-term memory that the computer uses whenever it's performing calculations. 14 00:00:55,880 --> 00:00:58,079 However, you cannot store your files there, 15 00:00:58,079 --> 00:01:01,219 because the RAM is cleared when you shut off the computer. 16 00:01:02,619 --> 00:01:05,459 The hard drive provides long-term storage, 17 00:01:05,920 --> 00:01:09,000 keeping all of the computer's data even when it's turned off. 18 00:01:09,840 --> 00:01:12,780 Many hard drives use a magnetic platter to store data, 19 00:01:13,359 --> 00:01:16,200 but many newer computers have solid-state drives, 20 00:01:16,519 --> 00:01:19,980 which are faster and more durable, but also more expensive. 21 00:01:21,439 --> 00:01:25,799 On many desktop computers, the motherboard has expansion slots 22 00:01:25,799 --> 00:01:28,819 that allow you to upgrade by adding expansion cards. 23 00:01:29,540 --> 00:01:32,319 You can add a video card to get better graphics performance, 24 00:01:32,799 --> 00:01:36,579 or you can add a wireless card to connect to your wireless home network. 25 00:01:37,439 --> 00:01:40,519 Most laptops, however, don't have expansion slots. 26 00:01:41,500 --> 00:01:44,819 Of course, the computer's components need electricity to run. 27 00:01:45,359 --> 00:01:48,799 The power supply unit is designed to take power from the wall outlet 28 00:01:48,799 --> 00:01:51,760 and send it to all of the different components that need power. 29 00:01:51,760 --> 00:01:58,659 laptops also contain a built-in battery that lets you use them anywhere a computer is a 30 00:01:58,659 --> 00:02:04,120 pretty complex machine but now that you've seen what goes on inside it should be a little less 31 00:02:04,120 --> 00:02:14,310 mysterious GCF global creating opportunities for a better life