Quiz on I/O Devices and Memory in Embedded Systems

What does SIMM stand for?

• Single Inline Memory Module

• Single Integrated Memory Module

• Single Internal Memory Module

• Single In-line Memory Model

What is the primary function of a watchdog timer?

• To measure time intervals

• To store fixed data

• To reset the processor if it misbehaves

• To count external events

What is the main difference between a timer and a counter?

• A timer counts events, while a counter measures time

• A timer has a reset function, while a counter does not

• A timer is connected to a periodic clock, while a counter is not

• A timer is used for memory, while a counter is for I/O

What type of converter is used to interface analog devices to digital systems?

• Read-Only Memory

• Digital/Analog Converter

• Analog/Digital Converter

• Field-Programmable ROM

What is the purpose of debouncing in keyboard inputs?

• To increase the speed of input

• To reduce power consumption

• To prevent false inputs from switch bouncing

• To enhance the keyboard's design

Which type of keyboard uses a microprocessor for input processing?

• Mechanical keyboard

• Scanned keyboard

• Encoded keyboard

• Raw keyboard

What is the primary function of a D/A converter?

• To interface with microcontrollers

• To measure voltage levels

• To store data permanently

• To convert digital signals to analog form

What is the role of a frame buffer in display devices?

• To store the current state of the display

• To provide power to the display

• To enhance the resolution of the display

• To convert analog signals to digital

What is the primary purpose of glue logic in device interfacing?

• To increase the speed of data transfer

• To connect devices to a bus

• To enhance the performance of the CPU

• To store data temporarily

What is the main advantage of using a microprocessor in a keyboard?

• To eliminate the need for switches

• To increase the size of the keyboard

• To simplify the interface to the computer

• To reduce the number of keys