Courses
Lesson 10 - Types of Memory
Random Access Memory (RAM) or Main Memory is used to store information on a temporary basis, such as a text document or a software program that is currently in use by the PC. The CPU must transfer information to RAM before software can manipulate it RAM is used for programs and data as well as by the operating system for disk caching (using RAM to hold recently accessed information). Thus, installing more RAM improves transfers between the CPU and both RAM and hard drives. If your computer runs short of RAM, the operating system can also use the hard drive as virtual memory, a slow substitute for RAM. Although the hard drive can substitute for RAM in a pinch, don’t confuse RAM with mass storage devices such as hard disks or SSDs. Although the contents of RAM and mass storage can be changed freely, RAM loses its contents as soon as you shut down the computer, while magnetic storage can hold data for years. Although RAM’s contents are temporary, RAM is much faster than magnetic or SSD storage; RAM speed is measured in nanoseconds (billionths of a second), while magnetic and SSD storage is measured in milliseconds (thousandths of a second)
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
-
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