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How many General-Purpose Registers are present in the Atmega168?(a) 12(b) 64(c) 32(d) 9I got this question in exam.This intriguing question originated from Microcontroller Specifications topic in chapter AtMega Microcontroller Specifications of Arduino

Answer»

Right option is (c) 32

The EXPLANATION is: There are 32 General-Purpose Registers in the chip, and they are all connected to the ALU (Arithmetic Logical UNIT) directly which allow 2 registers to be accessed in ONE instruction in a clock cycle.



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