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.
Use serif for printed work. Serif fonts are usually easier to read in printed works than sans-serif fonts. This is because the serif make the individual letters more distinctive and easier for our brains to recognise quickly. Without the serif, the brain has to spend longer identifying the letter because the shape is less distinctive.