How does a mechanical mouse work?
Mouse allows quick and easy access to many icons and operations on the computer,
such as selecting from a list of possible actions (menu), working with Windows
and moving files. when you move the mouse, the rubber ball turns and
runs two rollers, both associated with a wheel with slots. light-emitting
diode (LED) sends light through the slits and transducers convert
light into an electrical signal. Pressing the button will send additional information
to the computer.
1. Roller - Roller turns by turning the rubber ball back and forth
2. Rubber Ball - The ball is turning when you run the mouse over the surface
3. Moving Roller
4. Slotted wheel - This wheel the slots associated with vertical rollers.
5. Light emitting diode
6. Converter
7. Cable coupling
8. Plastic housing
9. Cable - cable connects the mouse to the computer through input on your computer
10. Chip - The chip processes data from the transducer movement and buttons
before it transmits them to the computer
11. Right button - The button pressing their work to encourage the chip and
the chip sends signals to the computer
12. Roller - This is moved by rotation of Roller balls
1. Wheel with slots - when the wheel rotates, the movement of the slot next to
the diode produces light flashes
2. Light-emitting diode (LED) - LED sends light through the slits on the outer
edge of the wheel
3. Converter - Converter code flashes of light into electrical signals.
4. Roller Lever - Lever roller transfers spin on the wheel with slits.
The data storage area is a set of flat plates coated with magnetized lining.
Data is stored as a series of coordinated
magnetized area inside the lining, called "domains". To read the data or write,
a device called an executive device moves
heads to read or write to position, vertical compared to the disk, while the
plates spinning at high speed.
Then, the signals are sent to the head, or the head receives signal, which records
or reads data.
1.FAT - in one part of the disc, in space to store files, information about the location
of all files on the disk are stored.
2.Head "write-read" - Head reads and writes data hovering 0.002 mm above the
plate surface
3.Lever of executive devices - Each head is "read-write" device placed on the
light handle that rotates around the pin at one end
and runs heads harmonized
4.Data cable - Trough this cable data flow between the hard disk, and devices
that we call the "Master Disc".
This device manages plates spins and data flow between the heads, "read-write"
and the opposite of it and the executive devices.
5.Block devices executive - executive device receives a continuous
flow of instructions to run the "read-write" heads.
It can start running heads up to 50 times per second.
6.Magnet
7.Movable coil - coil turns inside of the permanent magnet in the
centre of the executive device. When an electrical impulse
reaches the coil, causes her turn, and this in return causes shift of the lever of the
executive device.
8. Sector - on each track, there are several sectors
9. Step motor - This motor turns plates with speed of several thousand spins per minute
10. Track - Before first use, magnetized coating on each panel shares on the concentric tracks using special signal from the
computer, a process called formatting.
11. A set of plates - information is stored on both of their sides.
Read-write Head - Once the head is correctly positioned,
the magnet on top of her sends electrical pulses to ensure
that the data will be written into the proper sector. Binar data (0 and 1),
encoded by electric current direction change,
turn into harmonised patterns in the "domains". The data from the disc is
read the reversing the procedure, ie the
passage of "domain" below the
electromagnet, which induces a current in the wire.
1.Electromagnet - When data is written to disk, electrical impulses arriving there,
produce magnetic fields that align "domains"
on the track below.
2. Wire - this wire transfers written or read data registered between the
"read-write" head and the supervisory mechanism of the disk.
3."Domains" with data - Each domain is arranged in one of two possible
directions. Changing the direction about the
previous position of "domains" means 1, and when there is no change means zero.
4. Freely ordered "domains" - Where on the disc were never even written data,
"domains" are freely ordered.
How do touch-sensitive devices work?
Technologies of touch-sensitive devices to control a computer are developed in
two directions. First, the monitor can
act as a measuring sensor and respond to the tip of your finger or other object
and turn the touch into an electrical signal.
monitor systems that respond to touch, are widely used in the management
of automated counters and other movements
that require gentle control. Another solution is to use plastic pads as
measurement sensors. First, they were widely used with
graphic panels, and today have become an integral part of many
laptop computers. Movement of the finger
rectangular pad stimulates an identical run of the cursor on the monitor.
In most of these measuring senses, moving fingers change
the distribution of electric voltage in switches of the pad causing large
differences in electrical signals. With the use of pads that
respond to touch, a moving cursor can reach a speed of up to 100 cm per second.
The system of touch-sensitive monitors - Electricity, released through the
coating on the base layer of glass, produces a static
electric field. Touching the monitors interferes with the field, and
this changes the processor's graphical displays.
1. Base layer of glass - The glass is coated with transparent electro-enforceable
material
2. Image Processor - The processor constantly scans an image of the electrostatic field.
when changes occur in the image,
the processor makes a calculation of coordinates.
3. The appearance of the electric field - a layer of conducting electricity with
register changes in electrical voltage caused by
touch.
4. The front layer of glass - the glass is an electrically low voltage field that is
changeable at the touch of a finger.
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