D. A spike of electricity. They are fast and have a short duration.
Answer:
five types of pointing devices
Explanation:
Ponting devices
Pointing means point something and the pointing devices are the input /peripheral devices those are used to point the pointer on the screen. We do move cursor on the screen to open the files or any icon.
There are many types of pointing devices but these are quite common which are given below
- Computer mouse
- Finger on touch screen.
- Joystick.
- Leap Motion.
- Light pen (pen)
1.Mouse
Mouse is most common type of input device that is used for pointing the data on the screen. We press it with our hands and keep pointing the things.
There are three types of mouse
- optical mouse
- wireless mouse
- trackball mouse.
2. Finger on touch screen
In this type of movement the fingers are input devices those we use to see the movement of pointer on the screen and this is most common in this century.
3.Joystick.
Joystick is another input device to point the cursor but it is mostly used in games. Children can use it smartly so it is inculcated in games usually.
4. Leap Motion
The Leap Motion (LM) controller is a latest 3D sensing device for hand posture interaction with a computer. It is having the capability sense the location of the fingers of the hands, as well as the palm position.
5.Light Pen
this is another pointing device which is mostly used to highlight and select the data on the screen.
Note: All of these above pointing devices are most common used now a days. These devices are having new conventions day by day for the ease of user. This era is basically the era of IT ,so the use of computer must be so easy and conventional for the user so, the innovations and improvement in such devices is made side by side.
Answer:
Singing the words of the poem to the tune of Happy Birthday"
Explanation:
Mnemonic devices are those tools which can be used to improve a persons ability to remember something efficiently. In short, it a technique to memorize something in short period of time and remember it for longer period of time.
Memorizing a poem by singing it to the tune of Happy birthday is also a technique to remember the poem and memorizing it efficiently.
Answer:
The file system that we shall choose is NTFS file system.
Explanation:
NTFS file system is a file system developed by Microsoft that provides file system encryption. Encryption means to secure our data in such a way such that only authorized person's can have access to it. NTFS file system allows to encrypt data so that all our data is safe from various cyber related thefts thus making our system and data safe from vulnerability of theft.
Encryption does not prevent access to data but the data that is accessed by various agents remains meaningless to all the agents until the user of the data decrypts it.
