Time
2 hours 16 minutes
Difficulty
Beginner
CEU/CPE
3

Video Description

This lesson discusses installing and connecting input devices, devices that allow us to input and manipulate data on our computing systems. We begin with the keyboard and mouse which are the most familiar. Keyboard and mice are plug and play devices, as there is typically no software required to use one. The motherboard recognizes the keyboard or mouse is connected, but on occasions where the motherboard reads the OEM instructions first, as those installations are sequential. Computing systems cannot operate or function without an input device, so the keyboard and mouse are always instantly recognized by the computer system software and BIOS. Both the keyboard and mouse have a PS/2 connector, some are color coded purple and green, some are not but today, most OEMs have moved to using the USB connection. We'll explain the relationship between how a computer and keyboard/mouse communicate and what in terms of signaling happens between the mechanical and optical keyboard and mice. Touch screens are another input/out device because we put in specific input then see the results on the screen. You'll learn what an overlay screen is, why it would be needed and how to set it up for use.

Video Transcription

00:04
Hi and welcome to cyber dot i t. My name is Anthony, and today we're gonna be talking about recognizing and installing different types of input in media device devices when we're talking about different input devices for computer were mainly gonna be talking about devices that we take in attached to our computer, and they allow us to put information into our computer.
00:23
Hence the name our input devices.
00:25
Some of the most familiar of these would be our keyboard and mouse.
00:29
Now our keyboard and mouse,
00:31
um, allow us to have a few different ways that we connect them.
00:35
We can use on older serial type cable, depending on if we have the right technology and our computer and the right type of keyboard and mouse. We also have a PS two connection, which are the purple and green connectors. In more modern, we actually are moving into the realm of using USB connectors were talking about
00:54
installing our keyboard and mouse.
00:57
Typically, these air just plug and play type devices. There's no additional
01:00
CDs that we need to put into our computer and run in order to install a typical keyboard and mouse. And this is because well, if we didn't have the ability just to plug them in and the computer to recognize and run them, then it really wouldn't work for us to start up our computer and actually use the keyboard amounts to select the option
01:21
to download and install
01:23
important software.
01:25
So it's important that these run right out of the box when we're talking about using a serial connection or the older PS two connections with our keyboard and mouse these air devices that we just plug right in and our computer instantly recognizes in runs and interfaces with them.
01:42
But with our newer USB devices, when we plug in our keyboard amounts, they actually go through and they may install a little a little driver. This allows our computer to recognize because we use so many different
01:53
types of devices through USB that the computer recognizes. This USB device is going to be a keyboard and mouse, and then it will actually go and proceed to automatically install the driver for it and automatically allow that device to interact and run with it. We said the word driver a few times now. What is a driver? Well, driver is essentially what
02:12
allows our computer
02:14
to interact with the device. Our computer, when we plug into a device instantly into it, doesn't really know what to do. All it knows is it's receiving electrical signals through a cable through certain pins and one of its connectors, and it doesn't know how to interpret that. It doesn't know how to take that information and use it on its system. So it has to install a driver or it
02:34
a driver being additional soft,
02:36
where specifically for that piece of hardware that
02:38
allows the computer to interpret those signals it now knows, because of the driver. Okay, I'm gonna take these signals
02:45
from our extra keyboard and mouse that we have been through USB and these sick. When I move the mouse this way, I received a certain electrical signal that tells me to move my cursor to the right or to the left.
02:58
It's It's sort of that translator between hardware and electrical signals and software and what we see happen on our screen and what happens with our computer
03:07
now with our keyboard and mouse, we actually have two types of keyboard and mouse keyboards and mice that are
03:15
fairly common for mites. We're going to see mice called mechanical or ball and roller mites as well as optical. Nice. Now, optical mice such as the one that we have here actually use a beam of light on the back. You'll see there's no mechanical parts here. It's just the beam of light that bounces, and it detects where it is and wreck
03:35
prince to the surface that it's moving across on our older
03:38
ball rolling mice. There's actually a ball inside of the mouse that, as we're moving the mouse around, that ball is rotating in moving small rollers that allow our computer to know which way it needs to move the cursor now, especially these old ball roller mice. If they start to
03:55
move very erratically or we start having problems and they start to rumble when we moved them, it's very easy to clean them and just weaken, twist, open the inside. We can twist, open the back of one, remove the ball and then actually get in there while other with our finger or paper, small, paperclip, or even a like a Q tip. And just
04:15
remove some of the dirt
04:16
grime from inside of that ball roller mouse in off of the rollers that air inside of that, and that will help us to increase the performance on our ball rolling mice. But more, more. We're gonna let's see those less and actually see optical mice more. You also may see mice that actually have a rolling ball on top of the mouse. Instead of moving the mouse around, there's a ball on top
04:36
that you move with your hand.
04:38
You may see this Maurin graphical design situations or
04:43
some older computers sort of is a campaign into the ball on the bottom mouse. But there are a lot less common, and you'll see them a lot less, especially with the optical mice and the touch screens and things that we have now. So just keep those in common. Our keep those in mind
05:00
with our keyboards. It's really just a ah standard, just sustained keys on the front. This is just a really simple keyboard, not really anything extra going on here
05:10
with some of our newer keyboards. You may have additional function keys, which allow you to press one key and get to the Internet or open a calculator, and all of those have to be recognized by the particular driver that is included. Inside of that keyboard, you'll see specialty gaming keyboards. Sometimes that
05:28
may be illuminated or have a lot of extra buttons. Inmate
05:30
work
05:31
as mechanical keyboards and they When you press the keys, you hear them click a lot louder than just a standard keyboard like this one
05:39
on. And these are all considerations that you may take into it.
05:43
Take in when you're choosing a keyboard just based on your personal preference. How much you're winning, willing to spend on a keyboard and what it really
05:51
what you're really looking to get out of it. So from our mouse and keyboard, we just wanna list thes here under our input devices list and all we really need to know for getting these role in getting this going and getting these configured is that they're pretty much typically plug and play, and
06:09
if you plugged the device into your computer, it'll probably automatically recognize it and run.
06:14
They normally don't come with any additional software, but sometimes they dio and, as always, you want to read the manufacturer specifications and instructions. When you get the keyboard and mouse to see if there's any extra instructions that may come with it. These in extra instructions you may notice, especially come with wireless keyboard or wireless mouse
06:33
that you plug in using like a receiver dongle.
06:35
And then you have the actual keyboard and mouse communicating wirelessly. These may have batteries, or they may be rechargeable, and so you need to keep that in mind when you're using these. And if you run into issues with um, moving on to our next input device is the touch screen now. Normally, we think of of, ah,
06:53
screen for our computer as an output device. But as of recently, and especially within the past few years, withs with the release of products such as Windows eight,
07:02
Touch Screen is becoming Maur and Maur, increasingly popular in computers and laptops and all in one computers that you'll see that all they look like is just a big computer screen.
07:12
Now these touch screens are actually classified as input and output device is because we can see the output from the screen, and we also put in our input by touching the screen. Most devices that will encounter have touch screens already built into them that we buy them from the manufacturer, and the touch screen is already ready to go. It's already installed,
07:31
and it's already is already functioning properly. But there is an option for us safe. We have a screen that we want to make a touch screen that isn't already which come in the form of an overlay screen now is overlay. Screen does require additional software additional drivers. But typically,
07:49
typically all we would have to do with his overlay screen
07:53
is it's a thin screen that we place on top of our screen
07:57
match up the size and the dimension. And then we plug into, ah, particular receiver receptacle. Run the drivers, make sure we're reading all the instructions as we're going through, and then it can turn the screen that we had formerly. That was a non touch screen into a touch screen. So just keep in mind that if we have a touch screen that's
08:16
already built into our computer,
08:18
typically we won't need to add any additional drivers or doing any additional software addition. But if we make a non touch screen screen into a touch screen, then we will need Thio. Make sure we read the installation instructions and add those additional drivers if necessary. One neat feature for
08:37
some of them are more modern.
08:39
Touch screens is something called multi multi touch control or gesture control where we instead of just being a simple touch screen where you touch here and it clicks this option or you touch a file to open it or you can draw on the screen, you can actually use multi. Think many fingers in order to perform commands. You can pension.
08:58
You can pinch from the outside and move your fingers in, and that will allow you to
09:03
resized the screen to zoom out or go from the center and pull out. Zoom in. We can do swiping across the screen. And in order to change pages, there's lots of there's a lot of different ways that we can interact with touch screens, especially these screens that now implement gesture control and multi touch control.
09:22
We want to make sure that we get the most out of that by reading again.
09:26
The instructions that come with our screens and the software that we have installed on our computer that allows us to interact allows our touch screen rather to interact with our the software that's running on our computer

Up Next

Peripheral Devices and Connectors

A peripheral device or auxiliary device, is generally defined as any device that connects to and works with the computer in some way

Instructed By

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Anthony Harris
Systems Analyst and Administrator at SAIC
Instructor