3.Processors and memory. Chip, dual core , megabytes , megahertz , motherboard, processor , speed, upgraded. The "brain" of a computer is the 1.___________. Most of these are made by Intel and AMD , and are sometimes referred to as "2___________". The 4.__________ of a processor is measured in 5.__________, which is usually written as MHz. A computer’s memory is measures in 6.________. If a computer has 1,024 megabytes of memory, and the memory type is SDRAM , this written as 1,024MB SDRAM, and is pronounced "a thousand and twenty-four megabytes ess-dee-dram" The processor and memory modules are located on the 7.___________. Changing a computer’s processor is not generally practical, but the memory can usually be 8._________