Diff: doc/microbitOLED.md

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+### History of micro:bit learning a simple minded man internet of things
+
+1. [makecode.com](https://www.microbit.org/code)
+    1. blocks programming
+    2. typescript (named javascript) programming as a between layer
+    3. integration with github and sharing using links.
+    4. following links to [lancaster univercity](https://lancaster-university.github.io/microbit-docs/) and discrovery of equality of interface with typescript
+2. [mbed.com](https://www.mbed.com/en/)
+    1. struggling with finding needed component and cross searching inside for being clever
+    2. Finding out that class Microbit is a final layer upon DAL and HAL
+    2. Poject OLED - [code  snippets](https://github.com/Tinkertanker/pxt-oled-ssd1306) borrowed  
+
+### OLED display, 128x64 pixels, ssd1306 compatible
+
+... is about investigation and debug alternatives - in absense of other communications (seriel usb, bluetooth)
+
+- Displaying at OLED display
+- Having displaying in 25 led's display as a debugging alternative
+- Making code framents to investigate microbit soft- and harware
+
+#### 25 led's display - class Display
+
+Types of display
+
+1. a stick
+2. numbers in binary
+    1. on each row
+        1. binary
+        2. decimal coded binary
+    2. binary 25 led's as a whole
+3. flags