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A touchpad is a small, flat, rectangular pointing device that is sensitive to pressure and motion. To move the pointer using a touchpad, slide your fingertip across the surface of the pad. Some touchpads have one or more buttons around edge of the pad that work like a mouse buttons.

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Abdul Hamid

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What is falloc?

falloc is a function similar to malloc. Where the function malloc returns a pointer to an area of memory, falloc returns a "far" pointer to a "far" area of memory; i.e., memory that goes beyond the segmented memory limitations inherent to x86 memory architecture.


Where is pointer located?

A pointer is a variable that stores the memory address of another variable. In programming, pointers are typically located in the stack if they are local variables within a function, or in the heap if they are dynamically allocated. The actual data that the pointer points to can reside in either memory area, depending on how it was allocated.


What is ratio of area of circular waveguide to rectangular waveguide having same dominant mode cutoff frequency?

The ratio of the area of a circular waveguide to that of a rectangular waveguide with the same dominant mode cutoff frequency can be derived from the relationship between their dimensions and the cutoff frequency. For the dominant mode (TE11 for circular and TE10 for rectangular), the cutoff frequency depends on the waveguide's geometry. Generally, the area of the circular waveguide is greater than that of the rectangular waveguide when both are designed to support the same cutoff frequency. Specifically, the area ratio can be expressed as ( A_{\text{circle}} / A_{\text{rectangle}} = \frac{\pi a^2}{ab} ) where ( a ) is the radius of the circular waveguide and ( b ) is the width of the rectangular waveguide, leading to a ratio dependent on their respective dimensions.


What is the name for the peace of skin betwene the tumb and the pointer finger?

The piece of skin between the thumb and the pointer finger is called the "webbing" or "interdigital membrane." This area is more pronounced in some animals, like certain birds and reptiles, but in humans, it is a small fold of skin that connects the two digits. It aids in grip and dexterity.


What is the difference between uninitialized pointer and null pointer in c language?

A null pointer is a pointer that has been initialised with the NULL value (zero). An uninitialised pointer is one that has not be initialised to any value and will in fact store whatever value happened to reside in the pointer's own memory address at the point of instantiation. Uninitialised pointers are a clear sign of bad programming because the only safe way to determine if a pointer is valid or not is to compare its value with NULL. An uninitialised pointer will almost always be non-NULL, which means you run the risk of accessing memory that either does not belong to you, or is otherwise invalid. Most compilers include a debug switch to warn you when you attempt to access any uninitialised variable, which naturally includes pointer variables. This switch must be on at all times.Whenever you instantiate a pointer, always initialise it straight away, either by nullifying it, or by storing a valid memory address in it. When you are finished with the pointer, it's good practice to nullify it immediately, even if the pointer would subsequently fall from scope. If the pointer is to be immediately re-assigned, there is no need to nullify it (but it's good practice nonetheless). If you follow this practice at all times, you can be assured that any non-NULL pointer will always be pointing at something valid (and if it isn't, then you have some serious problems elsewhere in your code).As a rule of thumb, if you can use a reference rather than a pointer, use a reference. They are much easier to work with. Pointers should only be used if there's any possibility (however remote) that a reference could be NULL, because a NULL reference will completely invalidate your program (pointers can be NULL, but references can never be NULL). This is why functions such as malloc() and calloc(), and the C++ new operator all return pointers rather than references. You can only return a reference when an allocation is guaranteed to succeed, and a dynamic memory allocation simply cannot make that guarantee.

Related Questions

Which has more surface area a rectangular prisms or rectangular pyramid?

For the same base dimensions (base area) and the same height, the rectangular prism has more surface area.


Surface area of rectangular pyramid?

Suppose that the area of the rectangular base is: lw then if the height is: h the surface area is: lw + lh + wh I believe that formula is for the surface area of a rectangular prism...


What is the whole number of a rectangular area 225yd?

what will be a whole number for an rectangular area of 225 yards?


What are the dimensions of two rectangular prisms with the same surface area?

Given the surface area of a rectangular prism, there are infinitely many rectangular prisms possible.


What is the suface area of a rectangular prism?

The suface are of a rectangular prism is the area of each face added together for a total.


What is Finger sticks?

Finger stick-- A technique for collecting a very small amount of blood from the fingertip area.


A rectangular prism has a volume of 90cm3 the area of the rectangular prism is 45cm2. What is the height of the rectangular prism?

2 cm


A rectangular prism has a volume of 90cm3 the area of the rectangular prism is 45cm2 What is the height of the rectangular prism?

2 cm


What two different rectangular prisms have same surface area?

Given any rectangular prism, there are infinitely many other rectangular prisms with exactly the same surface area.


What is the suface area of a rectangular prism when l60 w24 h5?

i think it is that when a person asks what is the area of a rectangular prism you give them the answer


How do you find the volume of a rectangular prism if you know the area and height?

Volume of rectangular prism = area of base x height


How do you find the answer of the base area of a rectangular prism?

The base of a rectangular prism is a rectangle. The area of a rectangle is length times width.