Knowledge (XXG)

Touchpad

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127:, and a tap followed by a continuous pointing motion (a "click-and-a-half") can indicate dragging. Tactile touchpads allow for clicking and dragging by incorporating button functionality into the surface of the touchpad itself. To select, one presses down on the touchpad instead of a physical button. To drag, instead of performing the "click-and-a-half" technique, the user presses down while on the object, drags without releasing pressure, and lets go when done. Touchpad drivers can also allow the use of multiple fingers to emulate the other mouse buttons (commonly two-finger tapping for right click). 20: 278: 32: 293: 257:. Combinations of the devices were common, though touchpads and trackballs were rarely included together. Since the early 2000s, touchpads have become the dominant laptop pointing device as most consumer laptops produced during this period and beyond includes only touchpads, displacing the pointing stick. 439:
between a transmitter and receiver that are on opposite sides of the sensor. The transmitter creates an electric field which oscillates at 200–300 kHz. If a ground point, such as the finger, is placed between the transmitter and receiver, some of the field lines are shunted away, decreasing the
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to feature the single one-directional touchpad next to the side button called "Camera Control" which allows the users to take an easier way to take a photos and videos, the force sensor to distinguish between the firm press and the light press and the capacitance touch sensor to distinguish sliding
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computers and do not require a flat surface near the machine. The touchpad is close to the keyboard, and relatively short finger movements are required to move the cursor across the display screen; while advantageous, this also makes it possible for a user's palm or wrist to move the mouse cursor
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Like touchscreens, touchpads sense absolute position but their resolution is limited by their size. For common use as a pointer device, the dragging motion of a finger is translated into a finer, relative motion of the cursor on the output to the display on the operating system, analogous to the
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where a finger touches the pad. Capacitance-based touchpads will not sense the tip of a pencil or other similar ungrounded or non-conducting implements. Fingers insulated by a glove may also be problematic, and capacitive touchpads are rarely used as pointing devices for medical hardware.
246:. As touchpads began to be introduced in laptops in the 1990s, there was often confusion as to what the product should be called. No consistent term was used, and references varied, such as: glidepoint, touch sensitive input device, touchpad, trackpad, and pointing device. 130:
Touchpads are called clickpads if they rely on software buttons rather than physical buttons. Physically the whole clickpad formed a button, logically the driver interprets a click as a left or right button click depending on the placement of fingers.
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You put your finger on a small rectangular panel, and the cursor appears on screen. Move your finger around the panel, say from the bottom left of the panel to the centre, and the cursor moves from the bottom left to the centre of the screen in
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The Gavilan portable computer uses a touch-sensitive panel between its text-entry keyboard and its liquid-crystal display. Moving your finger around on this shifts the cursor on the screen to select commands from a
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Some touchpads have "hotspots", locations on the touchpad used for functionality beyond a mouse. For example, on certain touchpads, moving the finger along an edge of the touch pad will act as a
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by tapping two fingers, dragging two fingers for scrolling, or gestures for zoom in/out or rotate. The touchpads with physical buttons now are only hi-end business/professional laptops option.
55:. 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 739: 410:
to form a grid. A high frequency signal is applied sequentially between pairs in this two-dimensional grid array. The current that passes between the nodes is proportional to the
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that is lifted and put back on a surface. Hardware buttons equivalent to a standard mouse's left and right buttons are sometimes positioned adjacent to the touchpad.
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desktop computers were equipped with a touchpad on the right side of the keyboard. Introduced a year later, in 1983, the first battery-powered clamshell laptop, the
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incorporated a "Tactile Touchpad" design with a button integrated into the tracking surface (the lower part of the touchpad surface acts as a clickable button).
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are more prevalent. Trackpads are sometimes used on desktops, where desk space is scarce. Because trackpads can be made small, they can be found on
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digitizer tablets, where they are referred to as "click wheels", since they only sense motion along one axis, which is wrapped around like a wheel.
154:. Also, some touchpad drivers support tap zones, regions where a tap will execute a function, for example, pausing a media player or launching an 1112: 560: 743: 398:
There are two principal means by which touchpads work: the matrix approach and the capacitive shunt method. In the matrix approach, a series of
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touchpads that can sense in some cases up to five fingers simultaneously, providing more options for input, such as the ability to bring up the
802:"[Products | Our Technology | High-Sensitivity Capacitive Technology] Alps Alpine – Electronic Components and Automotive Infotainment" 536: 379:
primary can be used as part of ultraportable electronics; some handheld laptops and early smartphones can be equipped with optical trackpads.
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Touchpads also exist for desktop computers as an external peripheral, albeit rarely seen. But touchpad layer can be integrated with
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use), and some keyboards can have only touch input surface instead of hardware buttons (a typical solution for clean rooms).
188:, introduced in 1989, came with a new mouse-replacing input device similar to a touchpad, although more closely resembling a 1038: 988: 1640: 418:, such as a finger, is placed over one of the intersections between the conductive layer some of the electrical field is 1508: 1479: 964: 709: 1305: 1247: 770: 1484: 1092: 1013: 80: 1676: 1298: 1062: 622: 1615: 1528: 1501: 1472: 1235: 422:
to this ground point, resulting in a change in the apparent capacitance at that location. This method received
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Thryft, Ann R. "More Than a Mouse," Computer Product Development, EBN Extra, November 14, 1994, pp. E16 – E20
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series in 1994, using Cirque's GlidePoint technology, which Apple refers to as a "trackpad"; it replaced the
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External computer keyboards can be equipped with integrated touchpads (particularly keyboards oriented for
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included a touchpad, which was mounted above its keyboard, rather than below, which became the norm.
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such as those found in some Blackberry smartphones work optically, like an optical
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One-dimensional touchpads are the primary control interface for menu navigation on
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Annotated Bibliography of References to Gestures, Touchscreens, and Pen Computing
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A single one-dimensional trackpad can be used as a "Camera Control" found on the
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introduced the first widely available touchpad, branded as GlidePoint, in 1994.
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The capacitive shunt method, described in an application note by manufacturer
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Another early adopter of the GlidePoint pointing device was Sharp. Later,
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are arranged in an array of parallel lines in two layers, separated by an
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introduced their touchpad into the marketplace, branded the TouchPad, and
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tablet. The touchpad is the rectangle near the bottom of the keyboard.
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Malloy, Rich; Crabb, Don (October 1995). "Power Packed Power Books".
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Diehl, Stanford; Lennon, Anthony J.; McDonough, John (Oct 1995).
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with finger for adjusting the zoom, exposure or depth-of-field.
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portable music players and additional input method on some
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Jerome, Marty (1995). "Lightweight, Low-Cost Challenger".
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Users were often presented with the option to purchase a
158:. All of these functions are implemented in the touchpad 782:. No. October 1995. Green Publishing. p. 150. 304:
Touchpads are primarily used in self-contained portable
623:"Libinput features: Clickpad software button behavior" 572: 570: 340:, beginning with the Zen Touch. The second-generation 1633: 1577: 1536: 1527: 1405: 1341: 1284: 1213: 1148: 1139: 989:"Apple debuts iPhone 16 Pro and iPhone 16 Pro Max" 764: 762: 760: 309:accidentally while typing. Laptops today feature 242:was an early adopter of this product with their 211:introduced touchpads with modern placing in the 965:"Apple introduces iPhone 16 and iPhone 16 Plus" 1646:History of computing hardware (1960s–present) 1113: 1039:"Medical keyboard and stainless steel tablet" 223:models. Since 2008, Apple's revisions of the 95:Touchpads operate in several ways, including 8: 695:"GUIdebook Psion MC Series brochure, page 4" 123:software may interpret tapping the pad as a 1088:Notes on the History of Pen-based Computing 428:awarded to George Gerpheide in April 1994. 1533: 1145: 1120: 1106: 1098: 600: 598: 1063:"Analog Devices' Capacitive Shunt Method" 260:On September 9, 2024, Apple unveiled the 195:Laptops with touchpads were launched by 637:Getting Started With Your DOMAIN System 528: 1672:History of human–computer interaction 906:. No. Dec 95. 1995. p. 105. 835:"Blackbird: The PowerBook 500 Series" 7: 1651:List of pioneers in computer science 936:(October 1995). New York, NY: 44–52. 681:"GUIdebook Psion MC Series brochure" 919:Westchester County Business Journal 917:"Sharp Unveils Line of Notebooks". 266:iPhone 16 Pro and iPhone 16 Pro Max 14: 503:List of touch input manufacturers 708:Booth, Neil (2 December 1989). 332:also uses a touchpad for their 162:software, and can be disabled. 1037:GmbH, Systec & Solutions. 119:Some touchpads and associated 1: 1641:History of computing hardware 458:Major manufacturers include: 1509:Network interface controller 580:. sigchi.com. Archived from 366:as additional input option. 23:Closeup of a touchpad on an 1306:Refreshable braille display 1248:Refreshable braille display 902:"A WinBook for the Fussy". 657:. November 1983. p. 20 541:www.microcontrollertips.com 406:and crossing each other at 81:personal digital assistants 35:Closeup of a touchpad on a 1693: 921:(November 20, 1995). 1995. 771:"Touchpads to Navigate By" 625:. wayland.freedesktop.org. 186:MC 200/400/600/WORD Series 67:. Touchpads are common on 262:iPhone 16, iPhone 16 Plus 1043:www.systec-solutions.com 639:. Apollo Computer. 1983. 61:graphical user interface 1415:Central processing unit 697:. guidebookgallery.org. 683:. guidebookgallery.org. 435:, senses the change in 16:Type of pointing device 578:"The Tactile Touchpad" 440:apparent capacitance. 301: 289: 91:Operation and function 85:portable media players 40: 28: 710:"Psions of the Times" 467:Elan Microelectronics 425:U.S. patent 5,305,017 355:) uses touch for the 295: 286:BlackBerry Curve 8520 280: 101:resistive touchscreen 34: 22: 953:(December 1995): 96. 714:New Computer Express 651:"Briefcase computer" 806:tech.alpsalpine.com 394:Theory of operation 488:Capacitive sensing 471:Cirque Corporation 347:product line (the 302: 290: 142:and scrolling the 138:, controlling the 97:capacitive sensing 71:, contrasted with 41: 29: 1659: 1658: 1629: 1628: 1559:Analog audio jack 1280: 1279: 876:(June 10, 2009). 377:Optical trackpads 298:Microsoft Surface 288:in the red circle 73:desktop computers 1684: 1677:Pointing devices 1534: 1185:Optical trackpad 1150:Pointing devices 1146: 1122: 1115: 1108: 1099: 1089: 1070: 1069: 1067: 1059: 1053: 1052: 1050: 1049: 1034: 1028: 1027: 1025: 1024: 1009: 1003: 1002: 1000: 999: 985: 979: 978: 976: 975: 961: 955: 954: 944: 938: 937: 929: 923: 922: 914: 908: 907: 904:Windows Magazine 899: 893: 892: 890: 888: 870: 864: 863: 860:"MacBook design" 856: 850: 849: 847: 846: 831: 825: 822: 816: 815: 813: 812: 798: 792: 791: 775: 766: 755: 754: 752: 751: 742:. 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568: 559: 558: 554: 545: 543: 535: 534: 530: 526: 493:Graphics tablet 484: 456: 423: 396: 364:graphics tablet 275: 253:, touchpad, or 190:graphics tablet 168: 93: 65:computer screen 53:pointing device 17: 12: 11: 5: 1690: 1688: 1680: 1679: 1674: 1664: 1663: 1657: 1656: 1654: 1653: 1648: 1643: 1637: 1635: 1631: 1630: 1627: 1626: 1624: 1623: 1618: 1613: 1608: 1603: 1598: 1593: 1588: 1581: 1579: 1575: 1574: 1572: 1571: 1566: 1561: 1556: 1551: 1546: 1540: 1538: 1531: 1525: 1524: 1522: 1521: 1519:Expansion card 1516: 1511: 1506: 1505: 1504: 1499: 1489: 1488: 1487: 1477: 1476: 1475: 1470: 1456: 1446: 1445: 1444: 1439: 1429: 1424: 1423: 1422: 1420:Microprocessor 1411: 1409: 1403: 1402: 1400: 1399: 1398: 1397: 1392: 1382: 1381: 1380: 1375: 1370: 1360: 1355: 1349: 1347: 1339: 1338: 1336: 1335: 1330: 1325: 1320: 1319: 1318: 1308: 1303: 1302: 1301: 1290: 1288: 1286:Output devices 1282: 1281: 1278: 1277: 1275: 1274: 1273: 1272: 1262: 1261: 1260: 1250: 1245: 1240: 1239: 1238: 1228: 1223: 1217: 1215: 1211: 1210: 1208: 1207: 1202: 1197: 1192: 1190:Pointing stick 1187: 1182: 1181: 1180: 1170: 1165: 1160: 1154: 1152: 1143: 1137: 1136: 1127: 1125: 1124: 1117: 1110: 1102: 1096: 1095: 1084: 1077: 1076:External links 1074: 1072: 1071: 1054: 1029: 1004: 993:Apple Newsroom 980: 969:Apple Newsroom 956: 939: 924: 909: 894: 865: 851: 826: 817: 793: 756: 731: 700: 686: 672: 642: 628: 614: 594: 566: 561:"Tap and drag" 552: 527: 525: 522: 521: 520: 518:Pointing stick 515: 510: 508:Magic Trackpad 505: 500: 495: 490: 483: 480: 479: 478: 473: 468: 465: 455: 452: 448:computer mouse 433:Analog Devices 416:virtual ground 395: 392: 274: 273:Use in devices 271: 251:pointing stick 167: 164: 112:handling of a 92: 89: 27:CB5-311 laptop 15: 13: 10: 9: 6: 4: 3: 2: 1689: 1678: 1675: 1673: 1670: 1669: 1667: 1652: 1649: 1647: 1644: 1642: 1639: 1638: 1636: 1632: 1622: 1619: 1617: 1614: 1612: 1609: 1607: 1604: 1602: 1599: 1597: 1594: 1592: 1591:Parallel port 1589: 1586: 1583: 1582: 1580: 1576: 1570: 1567: 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When a 404:insulator 384:iPhone 16 342:Microsoft 255:trackball 236:Synaptics 221:PowerBook 217:trackball 203:in 1992. 170:By 1982, 152:scrolling 140:scrollbar 1585:FireWire 1578:Obsolete 1544:Ethernet 1323:Speakers 1221:Keyboard 1195:Touchpad 1130:computer 720:20 March 661:16 March 482:See also 390:models. 357:Zune Pad 353:Zune 4/8 336:line of 197:Olivetti 75:, where 49:trackpad 45:touchpad 1634:Related 1537:Current 1378:Blu-ray 1316:Plotter 1311:Printer 1294:Monitor 1270:Softcam 1178:Optical 1093:YouTube 420:shunted 284:of the 225:MacBook 166:History 57:pointer 37:MacBook 1492:MOSFET 1432:Memory 1299:Screen 1265:Webcam 1128:Basic 786:  655:Design 306:laptop 205:Cirque 172:Apollo 144:window 1611:eSATA 1529:Ports 1214:Other 1173:Mouse 1066:(PDF) 774:(PDF) 668:menu. 609:(PDF) 326:Wacom 240:Epson 209:Apple 182:Psion 148:focus 114:mouse 63:on a 59:in a 1569:HDMI 1485:SMPS 1473:SSHD 1467:NVMe 1463:SATA 1442:BIOS 1018:CNET 889:2010 882:CNET 784:ISSN 779:Byte 722:2022 663:2022 371:HTPC 351:and 345:Zune 227:and 199:and 77:mice 25:Acer 1621:VGA 1616:DVI 1549:USB 1502:VRM 1459:SSD 1454:HDD 1437:RAM 1373:DVD 1236:GPU 1091:on 334:Zen 184:'s 99:or 47:or 1668:: 1465:/ 1368:CD 1041:. 1016:. 991:. 967:. 880:. 837:. 804:. 776:. 759:^ 724:. 712:. 665:. 653:. 597:^ 569:^ 539:. 450:. 359:. 296:A 264:, 43:A 1469:) 1461:( 1121:e 1114:t 1107:v 1051:. 1026:. 1001:. 977:. 891:. 848:. 814:. 790:. 753:. 591:. 549:.

Index


Acer

MacBook
pointing device
pointer
graphical user interface
computer screen
laptop computers
desktop computers
mice
personal digital assistants
portable media players
capacitive sensing
resistive touchscreen
capacitance
mouse
device driver
mouse click
scroll wheel
scrollbar
window
focus
scrolling
application
device driver
Apollo
Gavilan SC
Psion
MC 200/400/600/WORD Series

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