# TouchDevelop Lessons Overview of TouchDevelop lessons for the @boardname@. ### @section full ### ~column ### LED screen * [plot guided](/hcwxud) `guided tutorial ` `video available` * [plots an LED](/njuzbvocit) [guided tutorial] * [blink symbols](/rfchtfjmag) `docs` * [clear screen](/jwqywu) * [point](/reference/led/point) * [set brightness](/tfrmcgdtxk) ## @boardname@ ## functions ### Basic * [show number](/doxhko) * [show string](/hgsfxg) * [forever - show image](/bniyze) `guided tutorial` * [forever - show animation - two frames 1a](/rwsjmubtaa) * [forever - show animation - two frames 1c](/fomtaxxdkk) * [forever - show animation - two frames 1 d](/huguhgjmmn) * [forever - show animation - multliple frames](/tweyhx) ## Language {#pconst} ### Variables * [global variables ](/nkecii) `guided tutorial` * [local variable - create image, show image](/dcvnwv) * data types: [number](/reference/types/number), [boolean](/reference/types/boolean), [string](/reference/types/string), [image](/reference/image/image) ### Statements and control structures * [if](/reference/logic/if) * [for](/reference/loops/for) * [for loop nested - plot](/vpvhdnaqfm) **script** * [while](/js/while) * [while - show string, show number, show animation](/bidtzqdips) `docs` * [while - create image ](/bnqbom) * [return](/js/return) * [break](/js/break) * [function](/js/function) * [assignment operation](/reference/variables/assign) `:=` ### Maths * arithmetic operators (`+`, `-`, `*`, `/`, mod) on [numbers](/reference/types/number) * comparison operators (such as `>`, `=`) on [numbers](/reference/types/number) * the [math](/js/math) library * the [bits](/js/bits) library ### Logical * boolean operators (`not`, `or`, `and`) on [booleans](/reference/types/boolean) ### Strings * concat operator combines [strings](/reference/types/string) ### ~ ### ~column ### Input * [button is pressed](/reference/input/button-is-pressed) * [on button pressed](/reference/input/on-button-pressed) * [acceleration](/reference/input/acceleration) * [compass heading](/reference/input/compass-heading) * [calibrate](/functions/calibrate) * [running time](/reference/input/running-time) ### ~ ### ~column ### Authoring & Other Bits * [TouchDevelop editor](/js/editor) * [markdown](/js/markdown) * [creating interactive tutorials](/js/creatinginteractivetutorials) * [run scripts in a web browser](/js/simulator) * [run scripts on your @boardname@](/usb) * [libraries](/js/libraries) ### Functions and libraries * [creating functions](/js/function) * [function parameters](/js/functionparameters) * [calling functions](/js/call) * [libraries](/js/libraries) ### Images * [create image](/reference/images/create-image) * [clear](/reference/basic/clear-screen) * [set pixel](/reference/images/set-pixel) * [pixel](/reference/images/pixel) * [show image](/reference/images/show-image) * [scroll image](/reference/images/scroll-image) * [width](/functions/width) * [show animation](/reference/basic/show-animation) ### Pins * [analog read pin](/reference/pins/analog-read-pin) * [analog write pin](/reference/pins/analog-write-pin) * [digital read pin](/reference/pins/digital-read-pin) * [digital write pin](/reference/pins/digital-write-pin) ### Accessories * [forever](/reference/basic/forever) * [in background](/reference/control/in-background) ## Tutorials * [Blink](/script:hcwxud) * [Button](/script:rxqgzy) * [Compass](/script:fhhhwl) * [Counter](/script:bqrria) * [Digital pet](/script:lsqwsk) * [Flashing heart](/script:bniyze) * [Glowing image](/script:hydyrp) ### ~