adplus-dvertising
frame-decoration

Question

When a key is pressed, the debounce circuit waits for 2 keyboard scans and then checks whether the key is still depressed in

a.

scanned keyboard special error mode

b.

scanned keyboard with N-key rollover

c.

scanned keyboard mode with 2 key lockout

d.

sensor matrix mode

Posted under Peripherals and Interfacing with 8086 Microprocessor

Answer: (b).scanned keyboard with N-key rollover

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. When a key is pressed, the debounce circuit waits for 2 keyboard scans and then checks whether the key is still depressed in
Add Comment

Similar Questions

Discover Related MCQs

Q. The data that is entered from the left side of the display unit is of

View solution

Q. The FIFO status word is used to indicate the error in

View solution

Q. The flag that increments automatically after each read or write operation to the display RAM is

View solution

Q. If any change in sensor value is detected at the end of a sensor matrix scan, then the IRQ line

View solution

Q. Which of the following is not a mode of data transmission?

View solution

Q. If the data is transmitted only in one direction over a single communication channel, then it is of

View solution

Q. If the data transmission takes place in either direction, but at a time data may be transmitted only in one direction then, it is of

View solution

Q. In 8251A, the pin that controls the rate at which the character is to be transmitted is

View solution

Q. TXD(Transmitted Data Output) pin carries serial stream of the transmitted data bits along with

View solution

Q. The signal that may be used either to interrupt the CPU or polled by the CPU is

View solution

Q. The disadvantage of RS-232C is

View solution

Q. The USB supports the signaling rate of

View solution

Q. The bit packet that commands the device either to receive data or transmit data in transmission of USB asynchronous communication is

View solution

Q. High speed USB devices neglect

View solution
View All MCQs on Peripherals and Interfacing with 8086

Suggested Topics

Are you eager to expand your knowledge beyond Microprocessor? We've curated a selection of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of Computer Science. Happy exploring!

Digital Logic Design

Understand the foundation of digital computers with our Digital Logic Design MCQs....

HTML

Start your journey in web development with our HTML MCQs. Learn the building blocks...

Systems Programming

Decode low-level programming with our Systems Programming MCQs. These questions delve...

Embedded Systems

Dive into the world of specialized computing systems with our Embedded Systems MCQs....

Compiler Design

Unravel the process of translating source code into executable programs with our...

Operating System

Dive deep into the core of computers with our Operating System MCQs. Learn about...

UNIX

Become proficient with the Unix operating system using our UNIX MCQs. Learn about...

Wireless and Mobile Communications

Get to grips with modern communication technologies with our Wireless and Mobile...

IT Fundamentals

Navigate the basics of information technology with our IT Fundamentals MCQs. Get a...