A digital camera is a camera that stores the pictures and video it takes in electronic format instead of to film. The picture is of a Casio QV-R62, a 6.0 Mega Pixel digital camera and example of a typical digital camera.
Definition of serif. : any of the short lines stemming from and at an angle to the upper and lower ends of the strokes of a letter.
The manual calls for a serif font -- specifically Times Roman or Courier -- for text and tables. A sans serif font such as Arial or Helvetica is required for figures. Normal text should be in 12-point font size. Serif means that there are short lines at the ends of the strokes of letters. Sans serif literally means without serif -- the short lines are not there. This type is serif.