Courses
Lesson 13 - Revision
1. How is computer memory measured? 2. List the main types of memory storage device. 3. How does hard disk memory storage compare with compact disk storage in terms of cost and capacity? 4. Describe the two main types of computer memory. 5. What factors can affect a computer’s performance? 6. Why would you need to install a graphics card? 1. Memory is measured in bits, bytes and gigs 2. Main types of storage device are: hard disk drive, USB drive, external drive, CD/DVD and NAS Drives 3. A hard disk costs much more than a CD, but it can store much more data. 4. The two main types of memory are RAM and ROM. RAM is a temporary store for information and anything in it is lost when the computer is switched off. ROM is a permanent store for information that can only be read by the CPU. It cannot be manipulated or changed and is not lost when the computer is switched off. 5. CPU speed, RAM capacity, hard disk speed and capacity and the number of applications running can all affect a computer’s performance. 6. A graphics card is normally needed for playing games and running graphics design applications.
Lesson List
- Lesson 1 - Types of Computers Duration: 00:33:03
- Lesson 2 - The Components of a Computer Duration: 00:20:48
- Lesson 3 - Hardware and Software & Revision Duration: 00:29:09
- Lesson 5 - The Central Processing Unit Duration: 00:21:45
- Lesson 6 - Input Devices Duration: 00:12:30
- Lessons 7 & 8 - Output devices and Revision Duration: 00:17:55
- Lesson 9 - Storage Devices Duration: 00:21:58
- Lesson 10 - Types of Memory Duration: 00:15:26
- Lesson 11 - Measuring Memory Duration: 00:16:31
- Lesson 12 - Computer Performance Duration: 00:17:31
- Lesson 13 - Revision Duration: 00:08:37
- Lesson 14 - Operating System Duration: 00:15:15
- Lesson 15 - Application Software Duration: 00:18:52
Teachers Info
Richard Murphy
- Website: http://www.rtsolutions.co.za
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Pastor at Word of Faith Christian Centre and Owner at RT Solutions. RT Solutions was established in 2003 as total business solutions company in the Garden Route area. Situated at 67 York Street we have been offering specialized solutions to home and business clients for more than 17 years.
Contact Us
126 Merriman Street
George, 6529
Western Cape
South Africa
Email: richard@hisheart.co.za
Tell: 044 874 1993
Cell: 083 275 6546