RAM: Read / Write memory, High Speed, Volatile Memory. ROM: Read only memory, Low Speed, Non Voliate Memory.
RAM- Random Access memory it is a Volatile Memory
volatile mean= when power is off data is loss ok
ROM- read only memory it is a non-volatile memory
it is read only memory we don't write this memory only read
8-bit Processor - 8085 / Z80 / 6800; 16-bit Processor - 8086 / 68000 / Z8000; 32-bit Processor - 80386 / 80486.
Microprocessor is a program-controlled device, which fetches the instructions from memory, decodes and executes the instructions. Most Micro Processor are single- chip devices.
A single chip CPU is called as Microprocessor.The CPU is made of two units namely the Arithmetic and Logic Unit and the Control Unit.It performs functions like executing the instructions given by the user program, controlling the I/O operations and the functions of peripheral devices
If you open your computers case, the motherboard is the flat, rectangular piece of circuit board to which everything seems to connect to for one reason or another.
Its the circuit board which contain processor,north bridge&south bridge and slots.
In primary storage device the storage capacity is limited. It has a volatile memory. In secondary storage device the storage capacity is larger. It is a nonvolatile memory. Primary devices are: RAM / ROM. Secondary devices are: Floppy disc / Hard disk.
Primary storage device is Ram where the instructions are stored for temporary and secondry storage is hard disk floppy cds etc.