DEM 314324 Guessing Paper & IMP Question Bank: Digital Electronics and microcontroller applications

In this article, we share all the very important questions of Digital Electronics and microcontroller applications DEM 314324 with Guessing Paper for the winter 2025 examination.

Electrical fourth-semester backlog students must solve these questions using the new textbook of Digital Electronics and Microcontroller Applications.

DEM 314324 Guessing Paper MSBTE Winter 2025 Exam

Q.1: Attempt any FIVE of the following :

1. Identify the direct addressing instruction from the following instructions. i) MOV A, #0AFH ii) MOV 0E5H, @RO iii) MOV R2, 45H iv) ADD A,45H.
2. Convert (A2F)16 to Decimal number system.
3. If the starting address of an external 2K RAM is 1000H, Find the ending address write its memory map.

Q.2:Attempt any THREE of the following :

1. Compare Harvard and Von – Neumann architecture
2. Draw architecture of 8051 microcontroller.
3. Explain the following directives with example – i) ORG ii) DB iii) EQU iv) END
4. Perform the subtraction using 2’S Complement methods. (85)10 – (32)10

IMP Question Bank: Digital Electronics and Microcontroller Applications

CHAPTER 1: Logic Gates and Logic Families

Perform the following Conversion:
a) (110101)2 = ( )10
b) (A4)16= ( )10
c) (247)10= ( )8
d) (A72)16= ( )8
e) (736)8= ( )2
f) (2F9)16= ( )2
g) (123)8= ( )16
h) (95)10= ( )16

2. Sketch the symbol of EX- OR and EX- NOR gate with its truth table.
3. Identify the following IC and draw the pin diagram of any one IC – 7400 and 7402.
4. Why NAND and NOR are said to be universal gates?

CHAPTER 2: Digitial Logic Circuits

• Define multiplexer & state its necessity.
• Write the excitation table for SR FF, JK-FF, T-FF and D-FF.
• .Define modulus of a counter? Write down the number of flip flops required for mod-5 counter?
• Differentiate between MUX & DEMUX. (4 points)
• Compare synchronous & asynchronous counter.

Conclusion

An important question set in Digital Electronics and microcontroller applications is given above for the upcoming backlog examination of electrical engineering.

DEM 314324 New MSBTE Model Answer Papers