Que: 91. The USART in AVR based micro controllers operate at which of the following modes?
|
| a. double speed asynchronous mode |
| b. master synchronous |
| c. slave synchronous |
| d. all of the mentioned |
(d). all of the mentioned
Que: 92. Which bit of the UCSRA is used for doubling the baud rate of the transmission?
|
| a. DOR |
| b. PE |
| c. U2X |
| d. MPCM |
Que: 93. What is the use of the PE and the FE bits of the UCSRA register?
|
| a. they are used for keeping a check at the speed of transmission and reception |
| b. they are used for keeping a check at the data bits to be transferred |
| c. they are used to keep the transmission error free |
| d. they are used as extra redundant bits with no use |
(c). they are used to keep the transmission error free
Que: 94. Which of the following bits are used for setting the data frame size?
|
| a. UCSZ0 |
| b. U2X |
| c. DOR |
| d. MPCM |
Que: 95. Which of the following parameters should the transmitter and the receiver agree upon before starting a serial transmission?
|
| a. baud rate |
| b. frame size |
| c. stop bit |
| d. all of the mentioned |
(d). all of the mentioned
Que: 96. In AVR, the LCD operates in two main modes, it can be in 8 bit or 4 bit data.
|
| a. TRUE |
| b. FALSE |
| c. depends on the situation |
| d. can’t be said |
Que: 97. What can be the sequence of commands that may be used for initializing an LCD?
|
| a. 0x06, 0x0e, 0x01 |
| b. 0x0e, 0x01, 0x80 |
| c. 0x38, 0x0e, 0x01 |
| d. all of the mentioned |
Que: 98. When the LCD operates in the 4 bit mode, then what more commands are added to it?
|
| a. 33 |
| b. 32 |
| c. 28 |
| d. all of the mentioned |
(d). all of the mentioned
Que: 99. What is the main function of the LPM instruction used in LCD?
|
| a. for initializing the LCD in the read mode |
| b. for initializing the LCD in the write mode |
| c. for sending a long string of characters to the LCD |
| d. all of the mentioned |
(c). for sending a long string of characters to the LCD
Que: 100. The RS pin acts as an
|
| a. input pin |
| b. output pin |
| c. any of the mentioned depending on the conditions |
| d. none of the mentioned |