Add initial Version of the Schematic regarding the Wikimedia Drawing, all...

Add initial Version of the Schematic regarding the Wikimedia Drawing, all Dimensions (Width, Length, Resistance) are still generic

README.md

 # CMOS-555
-LibreSilicon 1 um Technology clone of the well-known CMOS "triple-5"
+
+This Repository is for LibreSilicons's completely Open Source Timer IC "NE555" clone.
+
+The Original "triple-5" chip is legendary. Once developed by the Swiss electronics engineer [Hans R. Camenzind](https://en.wikipedia.org/wiki/Hans_Camenzind "Link to Wikipedia"), working for Signetics, gets cloned by many different companies and is nowadays still in production and still a bestseller. While the first designs were build with Bipolar Junction Transistors (BJT), also a couple of clones are made in Complementary metal-oxide-semiconductor (CMOS) technologies. 
+
+This Chip here uses the LibreSilicon 1 µm CMOS-Technlogogy and contains two separted "555" on the same die - being acurate the Chip becomes functionaly similiar to the "7556".
+
+## Requirements
+
+### Lepton EDA
+
+The Schematic for the CMOS-555 is done with the Schematic Entry program from Lepton-EDA - a GNU EDA tool clone with more active development than the original and the same License. On Debian-based Linux systems, you get lepton-schematic as part of the whole PCB tool suite Lepton-EDA by
+
+```
+apt-get install lepton-eda
+```
+
+as part of the whole PCB tool suite Lepton-EDA.
+
+### Spice
+
+A very usefull kind-of "Simulation Program with Integrated Circuit Emphasis" (SPICE), originaly from Berkley University is ngspice. Of course, this Open Source, general-purpose, analog electronic circuit simulator comes with Linux systems, e.g. on Debian-based systems with
+
+```
+apt-get install ngspice
+```
+
+Please make yourself familiar with Simulations using Spice.
+
+### Magic
+
+Another software tool, which should be installed before usage, is [Magic](http://opencircuitdesign.com/magic "http://opencircuitdesign.com/magic"). Magic is Open Source, but not part of all Linux distributions (lacks on OpenSuse, Arch Linux etc). On Debian-based systems
+
+```
+apt-get install magic
+```
+works.
+
+## Documentation
+
+Best Documentation about Analog Design and the "555" you'll find at Camenzind's [Book Site](http://designinganalogchips.com "Designing Analog Chips"). The Book is a great Textbook for analog Chip design; read it, study it, it is worth the time. For offline reading, you'll find the Download Link on the Book Site.
+
+Of course, the "555" also has a [Wikipedia Page](https://en.wikipedia.org/wiki/555_timer_IC "Link to Wikipedia").
+
+## Usage
+
+### Schematic
+
+```
+lepton-schematic Sources/geda/555_Wikimedia-Version.sch
+```
+
+### Layout
+
+```
+magic -T scmos.tech Layout/magic/CMOS-555.mag
+magic -T scmos.tech Layout/magic/CMOS-556.mag
+```
+
+

Sources/geda/555_Wikimedia-Version.sch

+v 20181211 2
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+CMOS "555" Timer IC - Schematic (Wikimedia.org Version)
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+{
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+https://commons.wikimedia.org/wiki/File:C555_Internal_Circuit.svg
+T 53900 40400 9 10 1 0 0 0 1
+2019-04-28
+B 41800 40300 7000 1100 19 10 1 0 -1 -1 0 -1 -1 -1 -1 -1
+T 41900 40500 19 10 1 0 0 0 4
+BOM:
+pmos4 - M1, M5, M6, M9, M10, M11, M13, M16, M19, M20, M22, M25
+nmos4 - M2, M3, M4, M7, M8, M12, M14, M15, M17, M18, M21, M23, M24, M26
+polyres - R1, R2, R3, R4
+T 50100 40400 9 10 1 0 0 0 1
+555_Wikimedia-Version.sch