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Therefore, CGA scrolling is done in software, by redrawing the entire screen for every frame, which such systems lack the performance to do for full-screen animation. Adaptive tile refresh minimizes the computing power required for sidescrolling games, to be within the reach of contemporary hardware.
Closeup of a touchpad on an Acer CB5-311 laptop Closeup of a touchpad on a MacBook 2015 laptop. A touchpad or trackpad is a type of pointing device.Its largest component is a tactile sensor: an electronic device with a flat surface, that detects the motion and position of a user's fingers, and translates them to 2D motion, to control a pointer in a graphical user interface on a computer screen.
The two keys are primarily used to scroll up or down in documents, but the scrolling distance varies between different applications. In word processors, for instance, they may jump by an emulated physical page or by a screen view that may show only part of one page or many pages at once depending on zoom factor.
Scrolling may take place in discrete increments (perhaps one or a few lines of text at a time), or continuously (smooth scrolling). Frame rate is the speed at which an entire image is redisplayed. It is related to scrolling in that changes to text and image position can only happen as often as the image can be redisplayed.
The scroll wheel on a mouse has been invented multiple times by different people unaware of the others' work. Other scrolling controls on a mouse, and the use of a wheel for scrolling both precede the combination of wheel and mouse. The earliest known example of the former is the Mighty Mouse prototype developed jointly by NTT, Japan and ETH Zürich, Switzer
By December 2011, HP's TouchPad was the second most desired tablet, with a 5 percent of share of tablet sales and an estimated 903,354 devices sold. [ 72 ] [ 73 ] The HP Touchpad's firesale had an effect on future Android tablet sales and the low pricing scheme, as compared to iPad, was used with the Kindle Fire and Nexus 7 , which were ...
Double clicking refers to clicking and releasing a button (often the primary one, usually the left button) twice. Software recognizes both clicks, and if the second occurs within a short time, the action is recognised as a double click. If the second click is made after the time expires it is considered to be a new, single click.
All other scrolling must be manually controlled by the user by use of scroll bars, mouse wheel, or Page Up/Page Down keys. Another alternate form of control is used in some spreadsheets when the Scroll Lock key is activated. In this case the caret is locked to the centre of the screen and the cursor keys instead move the worksheet itself ...