70.

73.

74.

76.

The contents of the Accumulator, in an 8085 microprocessor, after the following instructions
are execuled will become :

XRA A

MVI B, FO,

SUB B

(A) 104 © 01 (©) णच (D) Foy

In an 8085 A microprocessor based system, it is desired to increment the contents of memory
location whose address is available 17 (D,E) register pair and store the result in same location.
पीर sequence of instruction is :

(A) XCHG
INR M
© XCHG
INX H
(©) INXD
XCHG
(ए) INRM
XCHG

A memory system has a total of 8 memory chips each with 12 address lines and 4 data lines.
The total size of the memory system is :

(ಗಿ) 64 k bytes (B) 48 kbytes )© 32K bytes (D) 16 k bytes

PSW in BDB5 contains :
{A) accumulator (ए) flags (2) either (A) or (B} (D) both (A) and (B)

Schmilt trigger is a comparator civcuit with hysteresis, implemented by applying
to the non inverting input of a comparator or differential amplifier.

(^) negative feedback (B) മ റ

)© posilive feedback {D) both (A) and (B)

An IGBT is a combination of :

(೩) MOSFET and UJT (08) SCR and MOSFET
(C) MOSFET and 1 (D) None of these

Sample - and - hold circuits in analog - to digital converters (ADCs) are designed to :

(வ) sample and hold the output of the binary counter during the conversion process

(0) stabilize the input analog signal during the conversion process

(C) sample 300 1011 17೬ 1)/// converler staircase waveform during the conversion process
(12) stabilize the comparator's threshold voltage during the conversion process

11 213/2014
[57.൨

ர்‌ ந்‌ ட்‌ ‏كلا ١7‎