Every planet in the solar system has its own rotation time. Earthâs solar day and sidereal day are nearly the same, but some other planets are very different. Mercuryâs sidereal day is equivalent to 59 days, but its solar day is 176 days!
Pen Drive also referred as USB flash drive is a portable device which allows user to transfer data (text, images, videos etc) to and from computer quickly. Users can easily read and write the data on the Pen Drive by plugging it into the USB port on the computer.
Read Only Memory and Pen Drive Basics. Read Only Memory, or ROM, is the special kind of memory at the center of a pen drive. ROM can hold information in storage even without power. Because of this, you can take your flash memory USB pen drives anywhere, and it will hold your data for at least ten years.