... connected to the main board of the computer. RAM stands for 'random access memory' and is the working area of the computer, that is, the basic location where the microprocessor stores the required ... the basic operations of the CPU. These instructions are used to start up the computer, to read the information from the keyboard, to send characters to the screen, etc. They cannot be changed ... bit-mapped display, the doti displayed on the screen correspond, pixel by pixel, with bits in the main memory of the computer. The bits are held in an area of the memory called the 'refresh...