Display apparatus that displays scroll bar in displayed portion of operation screen reduced by superimposed keyboard, and image forming apparatus

A display apparatus comprising:

• a display device;
• a touch panel overlaid on the display device;
• and
• a control device including a processor, and configured to act as a display controller that controls a displaying operation of the display device, when the processor operates according to a control program,
• wherein the display controller causes the display device to:
• display an operation screen including a character input field;
• superimpose a keyboard on the operation screen, when the touch panel receives a touch operation performed on the character input field;
• and
• display a first scroll bar for scrolling the operation screen, a displayed portion of which has been reduced by the keyboard superimposed, in a first vacant region in the reduced displayed portion, not overlapping with the character input field and the keyboard.