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.
The hard disk drive is the main, and usually largest, data storage hardware device in a computer. The operating system, software titles, and most other files are stored in the hard disk drive. The hard drive is sometimes referred to as the C drive due to the fact that Microsoft Windows designates the C drive letter to the primary partition on the primary hard drive in a computer by default. While this is not a technically correct term to use, it is still common. 1  For example, some computers have multiple drive letters (e.g. C, D, E) representing areas across one or more hard drives. 2  These settings vary from drive to drive, so check with your hard drive manufacturer for details.