STORAGE DEVICES

1. FLOPPY DISK- is a data storage medium that is composed of a disk of thin, flexible ("floppy") magnetic storage  medium sealed in a square or rectangular plastic carrier lined with fabric that removes dust particles.

 2. MEMORY CARD- or flash card is an electronic flash memory data storage device used for storing digital information.

 3. ROM (READ-ONLY MEMORY)- s a class of storage media used in computers and other electronic devices. Data stored in ROM cannot be modified, or can be modified only slowly or with difficulty, so it is mainly used to distribute firmware (software that is very closely tied to specific hardware, and unlikely to need frequent updates).

 4. RAM (RANDOM- ACCESS MEMORY)- The word "RAM" is often associated with volatile types of memory (such as DRAM  memory modules), where the information is lost after the power is switched off. Many other types of memory are RAM as well, including most types of ROM  and a type of flash memory called NOR-flash.

 5. USB ( UNIVERSAL SERIAL BUS)- can connect computers peripherals such as mice, keyboards, digital cameras , printers , personal media players, flash drives, Network Adapters, and external hard drives. For many of those devices, USB has become the standard connection method.

OUTPUT DEVICES OF COMPUTERS

1. MONITOR- or display (sometimes called a visual display unit) is an electronic visual display  for computers. The monitor comprises the display device, circuitry, and an enclosure.

  2. PRINTER- is a peripheral which produces a text and/or graphics) of documents stored in electronic form, usually on physical print media such as paper or transparencies.

  3. SPEAKER- or multimedia speakers, are speaker external to a computer, that disable the lower fidelity built-in speaker. They often have a low-power internal amplifier.

 4.HEADPHONE- are a pair of small loudspeaker, or less commonly a single speaker, with a way of holding them close to a user's ears and a means of connecting them to a signal source such as an audio amplifier, radio or CD player.

 5. PROJECTOR- is a device that receives a video signal and projects the corresponding image on a projection  using a lens system.

INPUT DEVICES OF COMPUTER

INPUT DEVICES

1. KEYBOARD- is typewrite keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches. After punch cards and paper tape, interaction via teletype-style keyboards became the main input device for computers.

2. MOUSE- is a pointing devices that functions by detecting two-dimensional motion relative to its supporting surface.

3. WEB CAM- is a video camera which feeds its images in real time to a computer or computer network.

4. MICROPHONE-   is an acoustic-to-electric transducer or sensor that converts sound into an electrical signal.

 5. USB( UNIVERSAL SERIAL BUS)- can connect computers peripherals  such as mice, keyboards, digital cameras, printers, personal media players, flash drives, Network Adapters, and external hard drives.