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 :
- 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.
- Convert (A2F)16 to Decimal number system.
- 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 :
- Compare Harvard and Von – Neumann architecture
- Draw architecture of 8051 microcontroller.
- Explain the following directives with example – i) ORG ii) DB iii) EQU iv) END
- 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
- Sketch the symbol of EX- OR and EX- NOR gate with its truth table.
- Identify the following IC and draw the pin diagram of any one IC – 7400 and 7402.
- 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.
