A pen (Latin: penne, feather) is a writing implement used to apply ink to a surface, usually paper, for writing or drawing. Historically, reed pens, guileless, and dip pens were used, with a nib dipped in the ink. Ruling pens allow precise adjustment of line width, and still find a few specialized uses, but technical pens such as the Reprograms are more commonly used. Modern types also include ballpoint, rollers, fountain, and felt or ceramic IP pens.
A pen is a type of instrument used in writing that is a very important thing for a student or for a worker. A pen can be an arrow for a native and a crayon for a toddler. The three basic parts of a pen are the base, the cap and the case. In these three parts, the base is the most important part, this is where the plastic case for the ink is attached, the ink is also there and the point where the ink goes out. The second one is the cap, the cap is composed of plastic or metal, it usually protects the ball point from being damaged.
The last one is the case, this is where all the first part and second part located. The case is attached at the base to encase the plastic case for the ink. The cap is attached also to the base. In having this kind of instrument, wherever we go, we always see it and use it. The pen is an writing instrument that can be a companion to a student who always writes and a companion also to a worker who always signs many papers.