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The word size of 8085 microprocessor is_____.
bit
8-bit
16-bit
20-bit
8-bit
The 8085 is an 8-bit general-purpose microprocessor designed by Intel. It is called an 8-bit microprocessor because its Arithmetic Logic Unit (ALU), internal data bus, and registers are designed to handle data in 8-bit chunks simultaneously.
The 8085 is an 8-bit general-purpose microprocessor designed by Intel. It is called an 8-bit microprocessor because its Arithmetic Logic Unit (ALU), internal data bus, and registers are designed to handle data in 8-bit chunks simultaneously.
N=2┬░n тАФ Number of unique values representable by an n-bit processor, where n=8 for 8085, yielding 2┬░8=256 values.
The 'word size' refers to the number of bits that the processor can process, manipulate, or transfer in a single instruction cycle. In the 8085, the internal data bus is 8 bits wide, allowing it to perform operations on 8-bit data values (00HтАЛ to FFHтАЛ) in a single clock cycle.
The 8085 has an 8-bit data bus and a 16-bit address bus.
The 16-bit address bus allows the 8085 to access 2┬░16=65,536 (64 KB) of memory locations.
Word size is a fundamental parameter of microprocessor architecture determining register capacity.
Simple architectural design
Low power consumption compared to higher-bit microprocessors
Cost-effective for basic control applications
Limited data processing speed for complex calculations
Small memory addressing range (64 KB) relative to modern standards
Washing machine control
Simple embedded systems
Educational laboratory training kits
The 'word size' should not be confused with the 'address bus size'. While the data path is 8-bit, the address bus is 16-bit to allow addressing of memory.
Option A (4-bit) describes early microprocessors like Intel 4004.
Option C (16-bit) describes processors like 8086.
Option D (20-bit) corresponds to the address bus width of the 8086.
B is correct тАФ The 8085 microprocessor features an 8-bit internal data bus and registers, which characterizes it as an 8-bit processor.
Always distinguish between the data bus width (defines word size) and the address bus width (defines memory capacity). For 8085, these are 8-bit and 16-bit respectively.