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Digital Versatile or Video Disc (DVD): DVDs have become a popular
medium for storing information and videos on computers. Similar to
CDs, DVDs have a greater storage capacity, making them ideal for
storing and viewing movies and other data.
Blu-ray Disc: A Blu-ray disc is an optical storage medium designed for
holding large amounts of data and playing high-definition videos. It
differs from DVDs primarily in its much greater storage capacity.
Flash Drive: A flash drive is a compact, portable storage device with a Universal Serial Bus
(USB) connector.
• Pen Drive: A pen drive is a portable storage device that is easy
to carry in a pocket and can be plugged into any computer with a
USB port. It offers storage capacities of up to 1 TB.
• Memory Card: It is referred to as a multimedia memory card; it is
a very small storage device (typically 1–1.5 inches) used in mobile
phones and digital cameras. A card reader is needed to access data
stored on a memory card.
NEW TRENDS IN HARDWARE
Advancements in technology have led to the development of various innovative hardware
devices. Some are already available, while others are still in development. Let us explore a few
of them.
Wireless Devices
Traditionally, all hardware devices were connected
to the CPU via wires. Today, almost every type of
hardware has a wireless version that operates using
radio frequency (RF), infrared (IR), or Bluetooth
technology.
Virtual Keyboard
A virtual keyboard allows typing on a detectable surface
instead of pressing physical keys. Though it appears to
be a hardware component, it is actually a software-based
input method.
Computer—Hardware Components 15

