Measurement and Instrumentation
A 8085 microprocessor consist of

 Arithmetic and Logic Units (ALU), Control Unit (CU) and Registers.
 Arithmetic and Logic Units (ALU), Control Unit (CU), Registers and Memory.
 Arithmetic and Logic Units (ALU), Control Unit (CU) and I/O devices.
 Arithmetic and Logic Units (ALU), Control Unit (CU), Registers and I/O devices.

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Measurement and Instrumentation
A resistance is measured by the voltmeter-ammeter method employing dc excitation and a voltmeter of very high resistance connected directly across the unknown resistance. If the voltmeter and ammeter reading are subject to maximum possible errors of ± 2.4 % and ± 1.0 % respectively, then the magnitude of the maximum possible percentage error in the value of resistance deduced from the measurement is nearly

 ± 1%
 ± 1.4%
 ± 2.4%
 ± 3.4%

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