Important Points About Computer Memory are
- Memory can be categorized into a volatile memory or a non-volatile memory.
- Volatile memory stores the data temporarily whereas the non-volatile memory store the data permanently.
- Physical memory is the total amount of memory installed in the computer.
- RAM is a semiconductor-based memory where the CPU or the other hardware devices can write the data and read the same from it.
- ROM is the permanent data storage area.
- PROM stores the programs permanently.
- EPROM uses the ultra-violet rays to remove the programs from the memory.
- EEPROM uses the electrical charges to remove the programs from the memory.
- Flash memories are the high-density devices that write data in blocks or chunks.
- RAM is the main memory. The Static RAM and the Dynamic RAM are its two types.
- Transistor is a semiconductor device that opens or closes a circuit for reading the data.
- SRAM uses around four to six transistors for each memory cell.
- DRAM uses a pair of a transistor and a capacitor for each memory cell.
- EDO DRAM starts fetching the data from the next cell before the previous process completes.
- VRAM stores the images that are to be displayed on the computer screen.
- SDRAM synchronizes the memory speed with the CPU clock speed.
- RDRAM transfers data at the maximum speed of 800 MHz.
- DDR-SDRAM transfers data on both the edges of the clock signal that is on the rising and falling edges of the clock signal.
- RAM increases its data rate by using a technique known as dual channel.
- Installation of RAM depends on the amount of the memory required for the processor and the configuration of the motherboard.
- Memory of the system is upgraded either by changing the previous RAM or by adding one more RAM with the previous RAM.
- Troubleshooting methods are: Using BIOS beep codes and Using PC Memory Diagnostic Software.
