UART-2 MCQ’s

Electronics & Communication Engineering Embedded System

This set of Embedded System Multiple Choice Questions & Answers (MCQs) focuses on “UART-2″.

1. Which of the following indicate the type of access that the CPU needs to perform?
a) MR
b) RD
c) ADS
d) RCLK

2. Which of the following is used to reset the device in 8250?
a) MR
b) DDIS
c) INTR
d) RCLK

3. Which of the following are not used within the IBM PC?
a) TXRDY
b) BAUDOUT
c) ADS
d) OUT2

4. Which of the following have large FIFO buffer?
a) 8253
b) 8250
c) 16550
d) 16450

5. Which pins are used to connect an external crystal?
a) INR
b) ADS
c) XIN
d) SIN

6. Which provides an input clock for the receiver part of the UART 8250?
a) RD
b) RCLK
c) MR
d) DDIS

7. Which of the following has a quadruple buffered receiver and a double buffered transmitter?
a) Intel 8250
b) 16450
c) 16550
d) MC68681

8. Which UART is used in MC680 by 0 design?
a) Intel 8250
b) 16450
c) 16550
d) MC68681

9. Which of the following is a general purpose I/O pin?
a) OUT1
b) RD
c) ADS
d) MR

10. Which pins are used for additional DMA control?
a) RXRDY
b) RD
c) MR
d) INR

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