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What is the greatest negative number which can be stored in a 8-bit register using 2'complement arithmetic?
Wiki User
∙ 11y ago
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Neoma Donnelly
Wiki User
∙ 11y agoUsing 2's complement, an 8-bit number can store any integer between -128 and +127.
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Which unit of computer performs arithmetic and logical functions?
The ALU (arithmetic logic unit) An ALU loads data from input registres, an external Control Unit then tells the ALU what operation to perform on that data, and then the ALU stores its result into an output register. Other mechanisms move data between these registers and memory.
Does the the arithmetic logic unit performs comparisons such as not equal to?
Yes. In the x86 processors (Intel and compatible), there is simply a "compare" instruction, which will set several flags (one-bit values) in a register, one each for "greater than", "less than", "equal to", i.e., depending on the relative values of the two operands.
Draw and explain the bloack Daigram of Von Neumann machine?
Block diagram of the von Neumann architecture: MQ, multiplier quotient register; IR, instruction register; IBR, instruction buffer register; MAR, memory address register; MDR, memory data register
The coins in the store's cash register total 12.50 The cash register contains only nickels dimes and quarters There are twice as many dimes as nickels There are also twice as many quarters as di?
The coins in the store's cash register total $12.50. The cash register contains only nickels, dimes, and quarters. There are twice as many dimes as nickels. There are also twice as many quarters as dimes. How many quarters are in the cash register?
How do you log on to the chat room on dressup 247 from moble?
Press chat room press register ( register ) or ( check mark guest ) ANd there then enter a chat room
Can arithmetic be performed in the instruction register?
yes
What is the error that occurs when a number becomes too large for the computer to register it?
Arithmetic overflow.
What is an accumulator in microprocessor?
the accumulator is an 8-bit register then is part of the arithmetic/logic unit(ALU). this register is used to store to store 8-bit data and to perform arithmetic & logical operation. the result of an operation is stored in the accumulator. the accumulator is also identified as register A.
Is accumulator a general purpose register?
Yes and no. You can use it as a general purpose register, but if you do that, you will lose the ability to perform arithmetic and logical computations and comparisons that would normally use the accumulator.
What are registers that are designed to store the results of logic operations?
The register that stores the result of (an arithmetic) or logical result is the accumulator.
What is the function of accumulator 8085?
It is an 8 bit register which is accessable to programmer and is main fuction is to perfom all arithmetic and logical function.
Difference between a counter and a register?
A register can hold data, and it can be used for temporary storage or, in the case of an accumulator, it can participate in arithmetic or logical operations. A counter is a special case of a register. Usually, it can only be loaded, stored, or incremented, or used for the stack or as the program counter.
I-time and e-time definition?
I-Time: In I time CU fetches an instruction from memory and place it in register. E-Time: In E time CU fetches an instruction from memory to register and place it in the Arithmetic Logic Unit.
What is the difference between conditional and control flags in 8086 microprocessor?
Control Flag Register: The Control Flag Register (CFR), also known as the Program Status Word (PSW), is a register used to control the execution flow and behavior of the processor. It typically stores various control flags that govern different aspects of the CPU's operation. Some common flags found in the Control Flag Register include: Carry Flag (CF): Used to indicate whether an arithmetic operation generated a carry or borrow. Zero Flag (ZF): Indicates whether the result of an operation is zero. Sign Flag (SF): Indicates the sign (positive or negative) of the result. Overflow Flag (OF): Indicates whether an arithmetic operation resulted in an overflow. Interrupt Flag (IF): Determines whether interrupts are enabled or disabled. The Control Flag Register provides control over program execution, including branching, interrupt handling, and arithmetic operations. It helps determine the outcome of operations and can be used for conditional branching based on specific flag states. Conditional Flag Register: The Conditional Flag Register (CFR), also known as the Condition Code Register (CCR) or Status Register (SR), contains flags that reflect the result of the most recent arithmetic or logical operation performed by the processor. These flags are used to perform conditional branching and control the flow of instructions based on specific conditions. The flags present in the Conditional Flag Register can vary depending on the processor architecture, but some common flags include: Zero Flag (ZF): Indicates whether the result of an operation is zero. Sign Flag (SF): Indicates the sign (positive or negative) of the result. Overflow Flag (OF): Indicates whether an arithmetic operation resulted in an overflow. Carry Flag (CF): Used to indicate whether an arithmetic operation generated a carry or borrow. Auxiliary Carry Flag (AF): Indicates a carry or borrow from the lower-order nibble (4 bits) to the higher-order nibble. The Conditional Flag Register is primarily used for conditional jumps or branches, allowing the processor to alter the program flow based on the current flag states. To summarize, the Control Flag Register focuses on controlling the processor's behavior and handling interrupts, while the Conditional Flag Register reflects the outcome of arithmetic and logical operations and enables conditional branching based on flag states.
Can arithmetic be performed in the A register?
On platforms with specialized registers, the A register is usually an accumulator, whose primary function is to store the results (and possibly provide a parameter of) an arithmetic function. In Intel code, for example, add ax,bx adds the contents of ax and bx together, and stores the sum in ax. RISC processors generally do not have specialized registers in this sense, and instead name most their registers generically (e.g. r0, r1, r2...). This allows any general register to perform any general function, including arithmetic. For specific chip dialects, please refer to that chipset's programming manual.
Who did the adding machine typewriter and cash register machine have the greatest impact on?
illiterate women
What are necessary properties of RISC CPUs?
a "reduced" instruction set, consisting only of the instructions most commonly generated by compilersall arithmetic and logic instructions operate only register to register using an internal register setonly basic arithmetic and logic operations are built in, others handled in softwareall memory access instructions are simple register load or store instructionsonly one memory access mode built in, others handled in softwareinstructions always aligned whole words (no short or unaligned instructions)significant degree of pipeline parallelism in the hardware to optimize hardware efficiencyetc.
