Saturday, August 15, 2009
MQ ( multiplier)
Mq register which stored the multiplier shifts the multiplier out for decoding at rate comparable to the rate at which the partial product is shifted.
AC ( Accumulator Register)
In a central processing unit a register in which intermediate results are stored. Without an accumulator, it would be necessary to write the result of each calculation (addition, multiplication, shift, etc.) to main memory and read them back.
IBR (Instruction buffer register)
Memory Buffer Register (MBR) is the register in a computers processor, or central processingunitCPU, that stores the data being transferred to and from the immediate access store. It acts as a buffer allowing the processor and memory units to act independently without being affected by minor differences in operation.
Friday, August 14, 2009
PC ( Program counter)
A register in the control unit of the CPU that is used to keep track of the address of the current or next instruction. Typically, the program counter is advanced to the next instruction, and then the current instruction is executed. Also known as a "sequence control register" and the "instruction pointer.
IR ( Instruction Register )
Instruction register is the part of a CPU ' s control unit that stores the instruction currently being executed or decoded. In simple processors each instruction to be executed is loaded into the instruction register which holds it while it is decoded, prepared and ultimately executed, which can take several steps.
MAR (Memory address register)
The memory address register (MAR) holds the address of the memory location where the next instruction is to be executed. While the first instruction is being executed, the address of the next memory location is held by it.
MBR( Memory buffer register)
A Memory Buffer Register (MBR) is the register in a computers processor, or in CPU, that stores the data being transferred to and from the immediate access store. It acts as a buffer allowing the processor and memory units to act independently without being affected by minor differences in operation.
Monday, August 10, 2009
Computer organization & Architecture ( Relations)
Computer organization is a study of a Computer Architecture. E.g. Memory, Registers, RAM, ROM, CPU, ALU, 16 bit/ 32 bit/ 64 bit architecture, what different parts makes a computer. The architecture of a computer is chosen with regard to the types of programs that will be run on it (business, scientific, general-purpose, etc.). The design of a computer system. It sets the standard for all devices that connect to it and all the software that runs on it.
Thursday, August 6, 2009
Unicode is a comprehensive way of defining characters electronically for compatability throughout the world
American Standard Code for Information Interchange
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