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Answer is in the file below

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a. A numeric keypad.

b. An interpreter.

c. A 3D printer.

d. A speaker.

Explanation:

An output device can be defined as a hardware device that typically receives processed data from the central processing unit (CPU) and converts these data into information that can be used by the end user of a computer system.

Also, an input device can be defined as any device that is typically used for sending data to a computer system.

Generally, all of the output and input device of a computer are known as peripheral (external) devices and they provide data (informations) to the end users in various formats such as video, audio, texts, images etc.

Since output and input devices are peripheral (external) devices, they can be connected to the computer system wirelessly or through a wired-connection (cable).

Some examples of peripheral (external) devices are monitor, speakers, keyboard, printer, mouse, scanner, projector etc.

Basically, the three (3) key element of a computer system are: a set of memory modules, processor and a set of input-output (I/O) modules. Each of the input-output (I/O) module interfaces to the central switch or system bus and are used to control one or more peripheral (external) devices.

a. A numeric keypad is a device used to input a PIN. It comprises of numbers ranging from 0 to 9.

b. An interpreter analyses and executes a program line by line.

c. A 3D printer produces output in the form of solid objects. It is typically used for inscribing or printing textual informations or graphic images on an object in three dimensions.

d. A speaker produces output in the form of sound. It is an electronic device that converts electrical signals into sound energy (waves).

a. A numeric keypad.

b. An interpreter.

c. A 3D printer.

d. A speaker

Explanation:

An output device can be defined as a hardware device that typically receives processed data from the central processing unit (CPU) and converts these data into information that can be used by the end user of a computer system.

Also, an input device can be defined as any device that is typically used for sending data to a computer system.

Generally, all of the output and input device of a computer are known as peripheral (external) devices and they provide data (informations) to the end users in various formats such as video, audio, texts, images etc.

Since output and input devices are peripheral (external) devices, they can be connected to the computer system wirelessly or through a wired-connection (cable).

Explanation:

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