CCS QUIZ BEE - Embedded Systems Quiz

What is an embedded system?

• A system that can only perform one task at a time

• A system that relies on external components for functioning

• A computer hardware system with software embedded in it

• A system that works independently without any rules

What are the characteristics of an embedded system?

• Multi-functioned, loosely constrained, non-reactive

• Single-task oriented, loosely constrained, non-reactive

• Single-functioned, tightly constrained, reactive and real-time

• Multi-tasking, highly constrained, non-real-time

What is the function of a compiler in an embedded system?

• Transforms source code into binary format

• Translates low-level language to high-level language

• Converts assembly language into machine code

• Generates executable programs from high-level language

What is the purpose of the RST pin in an 8051 microcontroller?

• Provides ground reference

• Generates clock signal

• Activates power-on reset

• Enables external memory access

Which port in an 8051 microcontroller is used for serial communication?

• Port 3

• Port 1

• Port 2

• Port 0

What is the purpose of the SETB instruction in 8051?

• Set the bit (bit = 1)

• Complement the bit (bit = NOT bit)

• Jump to target if bit = 1 (jump if bit)

• Clear the bit (bit = 0)

Which register is used to access the stack in the 8051 microcontroller?

• Data Pointer (DPTR)

• Stack Pointer (SP)

• B register

• Accumulator

What is the purpose of the CJNE instruction in 8051?

• Jump if bit = 1

• Jump if byte ≠ data

• Jump if A ≠ 0

• Jump if A = 0

How many bytes of on-chip ROM does the 8051 microcontroller have?

• 32K bytes

• 8K bytes

• 64K bytes

• 4K bytes

What is the function of the PSW register in the 8051 microcontroller?

• Store data temporarily

• Store program counter address

• Store stack information

• Store flag bits