__NOTOC__
<center>This site hopes to evolve into an encyclopaedia on all things [[Amstrad|Amstrad]] [[CPC|CPC]] related. There are now '''[[Special:Allpages|{{NUMBEROFARTICLES}} articles]]''' around the CPC available.</center>
<center>[[Image:forum.png|300px|link=http://www.cpcwiki.eu/forum]] [[Image:Vs.png|300px|link=http://www.cpcwiki.eu/index.php/Speccy_Port]]</center><br>
<div style="borderExperiment: 1px solid rgb(255, 201, 201); margin4x4 Keypad Module: 0px 0px 5px; padding: 0.5em 1em; backgroundTouch-color: rgb(255, 243, 243);">Sensitive 4*4 Membrane Matrix Keyboard for External Expansion and Control of 16-Bit Microcontrollers<center> '''CPC Related NewsMatrix Keyboard''' <A matrix keyboard is an external device used with microcontrollers, featuring a grid layout that simplifies key identification. In this setup, columns are linked to the power supply and microcontroller outputs, while rows are inputs. This reduces the number of I/center>O ports needed. Large keyboards use a matrix arrangement to minimize I/O usage, with each key at the intersection of rows and columns. A single port can manage multiple keys in a matrix, increasing efficiency. For instance, a 4x4 matrix can handle 16 keys, which is more than direct connections. Adding more lines to the matrix increases the number of keys that can be handled exponentially, making it an efficient method for managing many keys.<center>Membrane Keyboard
[[File:PlayCityA membrane keyboard, also known as a membrane switch, is a popular choice for its blend of aesthetics and functionality.jpg|thumb|320px|[httpIt consists of four key components://wwwthe panel, upper circuit, isolation layer, and lower circuit.cpcwikiThis type of keyboard is valued for its modern design, compactness, light weight, and good sealing properties.eu/indexIt is also resistant to moisture, dust, oil, acids, alkalis, and shock, making it durable.php/PlayCity PlayCity MX4 Board]]]</center><br>Due to these features, it is widely used in various industries such as medical, computer, digital machinery, electronic scales, telecommunications, appliances, and gaming.Advantages:
*30/08/14: [[MegaFlashROManager|ROManager]] 1Sleek and novel appearance.8 released. [http://futureos.cpc-live.com/files/ROManager_1.8.zip Download]*30/08/14: '''[[SymbOS]]''' 2.1 Final [http://www.cpcwiki.eu/forum/news-events/symbos-2-1-final-released released]*14/08/14: '''PlayCity'''Compact size, Add [http://www.cpcwiki.eu/forum/amstrad-cpc-hardware/playcity-aka-ctc-ay-(mx4)-for-august-!!!/ 6ch stereo audiothin thickness, lightweight, Z80 CTC...] which is conducive to your CPCthe trend of lightweight, thin, short, small, and highly intelligent notebook keyboard development.*26/06/14: [http://www.cpcwiki.eu/index.php/CPC464_%26_CPC664_logos Amstrad CPC464 & CPC664 logos] by [[User:Forcy|Forcy]]*22/04/14: '''XMoisture-MEM'''proof, Add up to [http://www.cpcwiki.eu/forum/newsdust-events/x-mem-a-new-memory-expansion-for-all-cpc/ 512K RAM/ROM] on your 464/664/6128.*20/04/14: '''Breaking Baud'''proof, [http://www.cpcwiki.eu/forum/demos/breakingoil-baud/ THE tape demo]. 2nd place at Revision!*30/03/14: '''Superpix'''resistant, a new Picross-style game was [http://www.cpc-power.com/index.php?page=detail&num=10000 released]and resistant to harmful gases, with strong sealing properties, acid and alkali resistance, and shock resistance.*24/03/14: '''SAMdisk''' 3.8.2 [http://simonowen.com/samdisk/ released].*23/03/14: [[PSX controller mod for Amstrad CPC]] by [[User:Forcy|Forcy]]*11/03/14: '''CPCDiskXP ''' 2.5.1 [http://www.cpcwiki.eu/forum/news-events/cpcdiskxp-v2-1-released/msg76939/#msg76939 released] - a nice update!*03/02/14: '''La Guerra de Gamber''' [http://www.amstrad.es/juegosamstrad/decargajuegos/la-guerra-de-gamber.php released] by ESP Soft!*30/01/14: A CPC homebrew dedicated website is born: [http://homebrew.amstradtoday.com/index_uk.htm Homebrew.AT] Long service life and resistance to bending and folding<br>Key recognition method
<!-- 12 last news only -->In this way, when no key is pressed, all input lines are at a high logic level, indicating that no key is pressed. The output lines are at a low logic level. Once a key is pressed, the corresponding input line will be pulled down. By reading the status of the input lines, it can be determined whether a key is pressed.
<center><gallery widths=128px heights=96px>Image:symbos21cpcI.gif|[[SymbOS]] 2Row scanning method, also known as row (or column) scanning query method, is one of the most commonly used key recognition methods.1Image:superpix.png|[http://www.cpc-power.com/index.php?page=detail&num=10000 Superpix]Image:Gamber4.jpg| La Guerra de GamberImage:compo2013.png|[[Amstrad_CPC_16KBs_ROM_Game_Development_Competition_2013|16K ROM 2013]]Image:phortem01.png|[http://www.norecess.net/ Phortem]
<!Determine if any keys are pressed: Set all row lines Y0-- 5 last pictures only -->Y3 to a low logic level, then detect the status of the column lines. If any column line is at a low logic level, it indicates that a key on the keyboard has been pressed, and the closed key is located among the 4 keys where the low logic line intersects with the 4 row lines. If all column lines are at a high logic level, then no keys are pressed on the keyboard.
</gallery></center>Identifying the position of the pressed key involves determining which specific key is closed. The process is as follows: Set each row line to a low logic level one at a time, while keeping the other lines at a high logic level. Once you find a row line at a low logic level, examine the logic levels of each column line in sequence. If a column line is also at a low logic level, the key at the intersection of that column and the row set to low is the closed key.
<div align=right>II...[[OldNews|Older News]]...</div></div><!-- WEIRD TABLE START -->{| width="100%" class="FCK__ShowTableBorders" |- valign="top" | <div style="border: 1px solid rgb(176, 176, 176); margin: 0px 0px 5px; padding: 0.5em 1em; backgroundHigh-color: rgb(238, 238, 238);">low logic level flip method
=== CPCWiki related ===When a key is pressed, the high bits switch from 1 to 0, showing the row, and one of the low bits changes from 1 to 0, indicating the column. An OR operation combines these to determine the key's position. Keyboard and display processing can be intricate, primarily due to user habits and external factors, not the microcontroller. Organizing and logically representing the keyboard processing through algorithms before coding is crucial for creating efficient and effective programs.*[[CPCWiki updates]]Flexible Membrane Keyboard*[[Donors]]A flexible membrane keyboard consists of soft film layers, including PET for its electrical properties and low-resistance conductive coatings for circuit patterns. This design allows the keyboard to adapt to flat and curved surfaces, with integrated lead-out wires providing bendable connections to the device's circuitry.Flat Three-Dimensional Membrane KeyboardThis membrane keyboard has keys slightly raised, known as 3D key switches, which improve key recognition and tactile sensitivity, and add decorative appeal. Designing these keys involves precise positioning during mold pressing, and the height of the raised portion should not exceed twice the thickness of the substrate. Various designs can be applied to the protrusions for aesthetic purposes.
[https://www.unikeyic.com/search?keyword=Module '''Become an Author!Module Parameters''']<createbox> Contact resistance: 500 ohmsdefault=Enter name of article to create Insulation resistance: 100 Megaohmsbuttonlabel=Create article! Critical operating force: 150-200 Newtonswidth=40 Bounce time: 1 millisecond</createbox>Lifespan: 100 million cycles</div> Operating temperature: 60 degrees Celsius
<div style="border: 1px solid rgb(176, 176, 176); margin: 0px 0px 5px; padding: 0.5em 1em; background-color: rgb(238, 238, 238);">
<div style="text-align: right;"><small>'''All [[Special:Wantedpages|wanted articles]]''' | [[:Category:Stub|Extendable Stubs]] | '''[[Special:ContributionScores|List of most active contributors]]'''</small></div>
| width="50%" style="vertical-align: top;" | <div style="border: 1px solid rgb(228, 222, 222); margin: 0px 0px 5px; padding: 0.5em 1em; background-color: rgb(249, 249, 249);">
=== Did you know? ===1.Electrical Characteristics:Rated Current: 35V (DC), 100mA, 1WContact Resistance: 10Ω~500Ω(varies with different wire lengths depending on materials used for wires)Insulation Resistance: 100MΩ 100VDielectric Strength: 250VRms (50~60Hz 1min)Electric Shock Vibration: <5msLifetime: Touch Type: ≥1 million times2.Mechanical Performance:Operating Pressure: Touch: 170~397g (6~14oz)Switch Travel: Touch type: 0.6~1.5mm
*When the 664 was being developed3.Environmental Parameters:Operating Temperature: -40 to +80Storage Temperature: -40 to +80Temperature: From 40, Sugar was already looking 90% to 95%, 240 hoursVibration: 20G, maximum (and hinting publicly!10~200Hz, Mil-SLD-202 M204, Condition B) at the 6128 *The [[472|CPC 472]] was a model released in Spain with an extra unaccessible 8 KB of RAM to circumvent a spanish tax that was charged on imported machines with up to 64 KB memory.TAG:Keypad Module;electronic components; electronic product design
*With a possible total amount of '''832 x 288 pixel''' (576 interlaced) the For reliable and high-quality electronic components to enhance your lighting projects, you might consider checking out [[CPC|CPC]] was the 8 bit homecomputer with the highest screen resolution everhttps://www. *'''OpenOffice''' for Windowsunikeyic.com/Linux is search?keyword=Module Unikeyic], a direct descendant of [[Star-Division|StarWriter]] trusted brand for the CPCcircuit solutions. *The transfer speed of the [[CPC Booster|CPC Booster +]] serial interface is faster than a standard '''DSL connection'''. *[[SymbOS|SymbOS]] can handle more than '''50 times''' bigger hard discs than MS Windows 95A. *[[FutureOS|FutureOS]] can load 178 KB in '''9 seconds''' from floppy disc and manages up to '''4 MB''' of RAM </div> |}