Computer mouse history, Exams of English Language

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Computer

Mouse

What is a computer mouse

• (^) A computer mouse is a

coordinate input device for

controlling the cursor and

giving various commands to

the computer. The cursor is

controlled by moving the

mouse over the surface of the

table or mouse pad. Keys and

mouse wheel cause certain

actions, for example: activation

of the specified object, call of

the context menu, vertical

scrolling of web pages and

electronic documents.

In the process of "evolution" of a computer mouse, the greatest changes were experienced by the displacement sensors Mouse movements by the displacement sensor

Direct drive

• (^) The original design of the mouse movement sensor, invented by Douglas Engelbart at the Stanford Research Institute in 1963, consisted of two perpendicular wheels protruding from the body of the device. When you move the mouse, the wheels spin each in their own dimension.
• (^) This design had many drawbacks and was soon replaced with a ball-drive mouse.

Optical mice of the first generation

• Optical sensors are designed to directly monitor the movement of the working surface relative to the mouse. The elimination of the mechanical component ensured a higher reliability and allowed to increase the resolving power of the detector.
• (^) The first generation of optical sensors was represented by various schemes of optocouplers with indirect optical coupling - light-emitting and sensing reflections from the working surface of photosensitive diodes. Such sensors had one common property
  • they required the presence on the working surface (mouse pad) of special shading (perpendicular or diamond-shaped lines). On some rugs, these hatchings were done with colors that were invisible in ordinary light (such rugs could even have a pattern).
• (^) Disadvantages of such sensors are usually called:
• (^) The need to use a special rug and the impossibility of replacing it with another. Among other things, the rugs of different optical mice were often not interchangeable and were not produced separately;
• (^) The need for a certain orientation of the mouse relative to the rug, otherwise the mouse was not working properly;
• The sensitivity of the mouse to the contamination of the rug (after all, it comes into contact with the user's hand) - the sensor hesitantly perceived the hatching in the polluted places of the rug;
• (^) High cost of the device.

Optical Laser Mouse

• (^) In recent years, a new, more sophisticated type of optical sensor has been developed that uses a semiconductor laser for illumination.
• (^) Little is known about the shortcomings of such sensors, but their advantages are known:
• (^) Higher reliability and resolution;
• (^) The absence of a noticeable glow (a sensor with a sufficiently weak laser illumination of the visible or, possibly, infrared range);
• (^) Low power consumption;
• (^) There are fully integrated solutions when the backlight laser is performed on the same crystal as the sensor.

Gyroscopic mouse

• (^) A mouse equipped with a gyro detects motion not only on the surface, but also in space: it can be taken from the table and controlled by the movement of the brush in the air.
• (^) Gyroscopic sensors are being improved. For example, according to Logitech, mechanical sensors made using MEMS technology, used in MX Air mice, are smaller than traditional gyroscopic ones. To date, the smallest gyroscopic sensor is equipped with mice (NEO MOUSE), developed by the Korean company NEO REFLECTION. Weight "Neo mouse" is only 13 grams, and in size it is not more than a finger battery

Interface connection

Optical connection

• (^) The first attempts were the introduction of infrared communication between the mouse and a special receiving device, which, in turn, was connected to the computer port.
• (^) Optical communication in practice showed a major drawback: any obstacle between the mouse and the sensor interfered with the operation.

Induction mouse

• (^) Induction mice most often have inductive power from a special work platform ("rug") or a graphic tablet. But these mice are wireless only in part - a tablet or a pad is still connected by cable. Thus, the cable does not interfere with moving the mouse, but also does not allow you to work at a distance from the computer, as with a conventional wireless mouse.

A4Tech

• (^) One of the most practical and

popular companies that

gamers and ordinary users

love. They have a rather

catchy appearance, nice

materials make its use very

convenient, but rather wide

functionality in the form of

additional buttons, backlight,

speed control, etc. - make the

mouse recognizable and

beloved. We strongly

recommend this company to

beginning gamers, as well as

to active users of a computer

or laptop.

Logitech

• (^) It is also a very popular firm, which is distinguished by its high quality. Typically, computer mice of this firm are quite high in price, if they have rich functionality. There are budget types of mice, they are also good, but they are very modest, both in design and in options, so they look "paler" than competitors. MasterServis24.RU most recommends this particular manufacturer to those people who seek to find a quality product.

Razer

• A real gamer mouse with all the bells and whistles and modern options. It can not be found for a low price, so if you own such a mouse, then you really are lucky. After all, not everyone can afford to spend a large amount of money on such a device. Disadvantages in mice are practically nonexcept, except for the price, but the most expensive ones to buy are not particularly recommended, since they are simply crammed with all sorts of unnecessary functions and possibilities. Genius
• (^) One of the best companies,

if we consider it from the

budget segment. Has a fairly

wide range of inexpensive

(up to 500 Russian rubles)

computer mice. It has quite

a good design, and also has

a long service life. An

excellent option for those

who want to give a

minimum of money and get

a device you can rely on.

Advantages and disadvantages of computer mouse

Advantages

• (^) Very low price (compared to other devices like touch screens);
• (^) The mouse is suitable for long work. In the first years of multimedia, filmmakers liked to show computers of the "future" with a touch interface, but in fact this input method is rather tedious, since you have to keep your hands on weight;
• (^) High positioning accuracy of the cursor. Mouse (except for some "unsuccessful" models) is easy to get into the right pixel of the screen;
• (^) The mouse allows a lot of different manipulation - double and triple clicks, drag and drop, gestures, pressing one button while dragging another, etc. Therefore, in one hand you can concentrate a large number of controls
  • multi-button mice allow you to control, for example, the browser without using the keyboard. Disadvantages
• (^) Presumed danger of carpal tunnel syndrome;
• (^) For work requires a smooth smooth surface of sufficient size (with the possible exception of gyroscopic mice);
• (^) Instability to vibrations. For this reason, the mouse is practically not used in military devices. The trackball requires less space for work and does not require moving the hand, can not be lost, has greater resistance to external influences, more reliable.