It's believed that the ballpoint pen is one of the most useful inventions.It was invented by Ladislas Biro in Hungary in 1935.
The ballpoint pen has many advantages compared with the pen.It dones't need refilling after the thing in it runs out.It hardly leaks,and can help us write faster.So it's much more popular than the pen
The ballpoint pen is widely used in many fields.Now it has become smaller and lighter than before.Its price is usually low