Homework Soursewhich of the following statements isare false regarding the
which of the following statement(s) is(are) false regarding the PC1602F LCD?
It can be used in 4-bit mode. In which case only the lower 4 bits of the data bus (DB3-DB0) are connected.
When it is used in 4-bit mode, the two halves of any byte are sent in turn on the data lines. This allows the LCD to be controlled with fewer lines than that are required in 8-bit mode.
When it is used in 4-bit mode, every time a nibble is sent, the E line must be pulsed or toggled on and off.
If all we want to do with the LCD is to display messages, we can simply connect R/!W signal to pin 40 of the mbed hardware.
In the 4-bit mode, the E bit must be pulsed for every nibble of display data sent.
| a. | It can be used in 4-bit mode. In which case only the lower 4 bits of the data bus (DB3-DB0) are connected. | |
| b. | When it is used in 4-bit mode, the two halves of any byte are sent in turn on the data lines. This allows the LCD to be controlled with fewer lines than that are required in 8-bit mode. | |
| c. | When it is used in 4-bit mode, every time a nibble is sent, the E line must be pulsed or toggled on and off. | |
| d. | If all we want to do with the LCD is to display messages, we can simply connect R/!W signal to pin 40 of the mbed hardware. | |
| e. | In the 4-bit mode, the E bit must be pulsed for every nibble of display data sent. |
Solution
statemnt a :
It can be used in 4-bit mode. In which case only the lower 4 bits of the data bus (DB3-DB0) are connected.
The above statement is false.
Reason :
If we use the LCD in 4-bit mode. It refers to the the upper 4 bits of the data bus (DB4-DB7) are connected.
Option a is correct choice.
| . | It can be used in 4-bit mode. In which case only the lower 4 bits of the data bus (DB3-DB0) are connected. |
