REGISTER MEMORY

Register is the memory size is very small with very high speed access.
Registers Used to store data and instructions are being processed, while
that data and other instructions waiting to be processed will from be stored in
main memory. Registers in the CPU consists of:
1. Instruction Register (IR) is Used to store instructions are that
processed.
2. Program Counter (PC) registers are used to store addresses
that main memory location contains the instructions that are processed. During the process
progresses, the contents of the PC turned into main memory address containing instructions
that will of be processed next. This allows for tracking impressions
the next instruction in main memory.
3. General-purpose registers, registers that is have a variety of functions
associated with the data being processed. For example, if Used for
accommodate the data being processed is Called the operand registers, whereas
if it is Used to accommodate its product Called the accumulator.
4. Memory Data Register (MDR), Which Used to collect data registers
or instructions sent from main memory to the CPU, or to accommodate data
saved to main memory as a result of CPU processing.
5. Memory Address Registers (MAR) is Used to hold data or address
instructions on the main memory will from be taken or to be placed.

Know the memory on your computer.
What is on our minds if there was word of memory, storage media must be answered. Memory is needed to store the data that was entered by the user on a PC. When we store the data stored in computer memory, the data will of stay there forever. Every time the memory is full, then the existing data could be removed in part or entirely to be replaced with new data. Computer Memory Could is likened to a blackboard; Nowhere WHO Every person entered into the room could read and utilize the existing data without changing the Composition of the Presented. Data are processed by computer, is actually still stored in the memory, and in this case the computer is only reading the data and then processes it. Did not know it would not be love; let us know at a Glance about the memory on the PC.
Memory functions for storing data and programs. Various types of memory are the fastest access until late. Based on the access speed of the memory hierarchy Can be created as in the Following table.


1. Register Memory
is a type of memory nowhere the fastest access speeds, this memory there is on the CPU / Processor.
Example: Data register, address register, Stack Pointer Register, Memory Address Register, I / O Address Register, Instruction Register, and others.
2. Cache Memory
Limited-capacity memory, high speed is more expensive than main memory. Cache memory is there between the main memory and processor registers, processor not functioning to directly refer to the main memory so That Can performance is improved.

Cache Memory, there are two types, namely:
1. Cache memory embedded on the internal processor, this type of cache memory access speed is very high, and very expensive. Can this be seen in such high-priced processor P4, P3, AMD Athlon, etc., the higher the capacity of L1, L2 memory Chace hence more expensive and faster processor.
2. Memory cache found outside Processor, Which is located on the motherboard, this type of memory access speed is very high, although not as fast as the memory cache first kind (which is on the internal processor). The Bigger the capacity the more expensive and faster. Can this be seen on a motherboard with a variety of cache memory capacity of 256KB, 512KB, 1Mb, 2Mb etc.
Main 3.Memori
Main memory (main memory) is a resource center that computer system dynamically be allocated to users, programs and processes. This memory stores data and programs to be Executed by the CPU and therefore has the Characteristics of the collection accessible to the CPU instructions to execute the order to execution-time programs Each Depends on the speed of transfer cycles memory. The more fast main memory, the faster the computer. Main Memory Type:
1. ROM (Read Only Memory) is memory that can only be read only data or programs. On the PC, the ROM contained in the BIOS (Basic Input Output System) found on the Mother Board Which functions to download the settings of existing peripherals in the system.
2. RAM (Random Access Memory) which has the ABILITY to change data or programs stored therein.
Secondary 4.Memori
an additional memory function to store data or programs. Examples: hard disk, floppy disk etc... The size of a computer, is determined by the size of memory it has. If the computer has more memory, then the computer capability in terms of storing the data Also Becomes Large, and vice versa. Units of data stored in memory is digit by Byte, Kilo-byte Mega-byte, or Giga-byte. In this case, one character = one byte.