9. OCR A Level (H046-H446) SRL3 - 1.1 Input, output and storage devices
Summary
TLDRThis video explores the roles of input, output, and storage devices in computer systems. It explains that input devices like mice and microphones send data to computers, output devices like screens and speakers convert data into human-readable formats, and storage devices like hard drives and USBs save data. The video also discusses the dual nature of devices like gaming controllers, which can act as both input and output. It concludes by applying these concepts to a real-world scenario, like an ATM system, highlighting the integration of various devices for data processing and user interaction.
Takeaways
- ๐ฅ๏ธ Input devices are used to pass information into a computer system, such as a mouse, keyboard, microphone, barcode scanner, and webcam.
- ๐บ Output devices convert digital data into human-readable formats like sound, images, or vibrations, including displays, printers, projectors, headphones, and speakers.
- ๐พ Storage devices are for temporary or permanent data storage and can be internal (like RAM, SSD, HDD) or external (like DVDs, USB drives, memory cards, external HDDs).
- ๐ฎ A gaming controller is primarily an input device, translating user actions into digital signals, but also has output features like built-in speakers and vibration feedback.
- ๐ค Modern controllers act as complete embedded systems with their own processors for handling data input and output.
- ๐ For exams, it's important to understand the primary function of devices like gaming controllers, even if they have multiple capabilities.
- ๐ง In a cash point system, input devices include card readers, keypads, buttons, and cameras, while output devices are monitors, printers, speakers, and cash dispensers.
- ๐ผ Behind the scenes of a cash point system, there's likely internal storage and main memory acting as storage devices.
- ๐ Memorizing a list of input, output, and storage devices is useful, but understanding how to apply them in different scenarios is crucial.
- ๐ The video emphasizes the importance of justifying your answers in exams when discussing the application of these devices in computer science.
Q & A
What is an input device?
-An input device is any device that allows you to pass information from the outside world into a computer system, such as a mouse, keyboard, microphone, barcode scanner, or webcam.
How does an output device differ from an input device?
-An output device takes data stored in digital form and converts it into another format that humans can process, like sound waves, images, or vibration feedback, whereas an input device captures data from the physical world to be processed by a computer.
What are some examples of output devices mentioned in the script?
-Examples of output devices mentioned include a visual display unit, printer, projector, headphones, and speakers.
Define a storage device as described in the video script.
-A storage device is any device used for either temporary or permanent storage of data. It can be internal, like RAM, solid-state hard drives, or magnetic hard drives, or external, like optical disks, USB pens, memory cards, or external hard drives.
What is the role of a gaming controller in terms of input and output?
-A gaming controller acts primarily as an input device by translating button presses and joystick movements into digital signals. However, it also has output capabilities, such as built-in speakers and vibration feedback.
Why might a gaming controller be considered an embedded system?
-A gaming controller might be considered an embedded system because it likely has its own processor that processes data before sending it to the console and interprets data to produce output.
What should one consider when determining if a gaming controller is an input or output device?
-One should consider the primary function of the gaming controller, which is to input data into a computer system. However, the presence of output features like speakers and vibration feedback also blurs the lines.
What are the key input, output, and storage devices that might be used in a cash point system?
-In a cash point system, input devices include card readers, keypads, buttons, and cameras. Output devices include monitors, printers, speakers, and actuators for dispensing cash. Storage devices are likely internal secondary storage and main memory.
How does the video script suggest approaching the understanding of input, output, and storage devices for an exam?
-The script suggests understanding and listing various devices, but more importantly, knowing how they can be applied and used in different scenarios or situations.
What is the significance of knowing how to apply input, output, and storage devices in computer science?
-Knowing how to apply these devices is crucial for solving real-world problems and understanding their roles in various systems, which is a key aspect of computer science applications.
What advice does the script give for answering questions about devices in an exam?
-The script advises to fully justify your answer in the exams, acknowledging that there can be some subjectivity in categorizing devices, especially in cases where they have both input and output functions.
Outlines
๐ฅ๏ธ Input, Output, and Storage Devices Explained
This paragraph introduces the concepts of input, output, and storage devices in computing. Input devices are those that allow data to be entered into a computer system, such as a mouse, keyboard, microphone, barcode scanner, and webcam. Output devices convert digital data into a human-readable format, like visual displays, printers, projectors, headphones, and speakers. Storage devices are used for temporary or permanent data storage and can be internal (e.g., RAM, solid-state drives, magnetic hard drives) or external (e.g., DVDs, USB drives, memory cards, external hard drives). The paragraph also discusses the complexity of classifying devices strictly as input or output, using a gaming controller as an example that serves both functions. It emphasizes the importance of understanding how these devices can be applied in different scenarios, such as in an ATM system, which uses card readers, keypads, buttons, cameras, displays, printers, speakers, and cash dispensers as input, output, and storage mechanisms.
๐พ Application of Devices in Computer Science
The second paragraph focuses on the practical application of input, output, and storage devices in computer science. It poses a key question about how these devices are used in typical computer science applications and encourages viewers to consider how they might answer this in an exam setting. The paragraph concludes with a reminder that while knowing the types of devices is important, understanding their application and usage in various situations is even more crucial.
Mindmap
Keywords
๐กInput Device
๐กOutput Device
๐กStorage Device
๐กGaming Controller
๐กMain Memory (RAM)
๐กSolid State Drive (SSD)
๐กMagnetic Hard Drive
๐กOptical Disk
๐กUSB Pen
๐กMemory Card
๐กExternal Hard Drive
๐กCash Point System
Highlights
Input devices allow information to be passed into a computer system.
Typical input devices include a mouse, keyboard, microphone, barcode scanner, and webcam.
Output devices convert digital data into formats humans can process.
Examples of output devices are visual display units, printers, projectors, headphones, and speakers.
Storage devices are used for temporary or permanent data storage.
Internal storage examples include RAM, solid-state hard drives, and magnetic hard drives.
External storage devices include optical disks, USB pens, memory cards, and external hard drives.
Gaming controllers can be both input and output devices.
Modern controllers have built-in speakers and vibration feedback.
Controllers likely have their own processors for data processing.
For exams, consider controllers primarily as input devices.
It's important to understand how devices are applied in different scenarios.
Cash point systems use various input, output, and storage devices.
Card readers, keypads, buttons, and cameras are input devices in cash point systems.
Monitors, printers, speakers, and motors are output devices in cash point systems.
Cash point systems likely have internal secondary storage and main memory.
The video aims to help viewers understand the typical applications of input, output, and storage devices in computer science.
Transcripts
in this video we discuss how different
input
output and storage devices can be
applied as a solution to different
problems
[Music]
so an input device is any device
that allows you to pass information from
the outside world
into a computer system
literally hundreds of different input
devices but typical ones could be
a mouse a keyboard a microphone some
kind of barcode scanner and a webcam
an output device is there for any device
that can take data stored in a digital
form
and convert it into another format that
humans can process
for example sound wave images or
vibration feedback on a controller
again there's a vast range of different
output devices
but here's a few a visual display unit a
printer projector headphones and
speakers
a storage device is any device used for
either temporary
or permanent storage of data now these
can be internal
or external
here on the left is three examples of
internal storage
we've got main memory ram a solid state
hard drive
and a magnetic hard drive
and here's some typical examples of
external storage devices
we've got an optical disk such as a dvd
or blu-ray
we've got a usb pen a memory card
an external hard drive
now when we get down to it sometimes
things aren't quite as simple as they
seem
so here we have a gaming controller for
a typical
games console now would you consider
this an
input device or an output device
well it certainly translates your button
presses your joystick movements into
digital signals
and sends them to the console so surely
this is a device for inputting data into
a computer system
but most modern controllers also now
have built-in speakers
and provide vibration feedback now
both of these are output systems
so surely this is also an output device
the reality really
is this probably is a complete embedded
system it almost certainly will have its
own processor processing data
before it sends it off to the console
and knowing how to
interpret that data to produce output
you don't need to worry too much about
this fine level of detail for your exam
but you should consider this probably
primarily an
input device but just be aware the lines
get a bit blurry
at the end of the day as long as you
fully justify your answer in the exams
which is always a good idea you could
get away with calling this
either
so here's a list of typical input output
and storage devices
which you might be expected to know
about in the exam
now this list is far from exhaustive
there literally are thousands of these
type of devices
but this is certainly a good starting
point
what's more important though other than
simply being able to
understand and list these various
devices is knowing
how they can be applied and used
for a given situation or scenario
so here we have a cash point system
that you might find in a high street
what
input output and storage devices
might be used as part of this cash point
system
well we can quickly identify various
ways that this system is gathering
input from the real world we have the
card reader
we have a keypad we've got various
buttons either side of the screen
there's also a camera at the top for
security purposes
all of these are input devices
there's also various output mechanisms
there's some form of monitor or display
there's a printer which will produce a
receipt
a speaker to give audio feedback
and although it's not obvious there's
obviously some kind of actuator or motor
that's actually delivering you the cash
now this is considered an
output device
again you can infer that there must be
some storage devices behind this system
most likely some form of internal
secondary storage
and most likely some main memory
so having watched this video you should
be able to answer the following
key question how are input output and
storage devices used
in typical applications of computer
science
[Music]
you
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