LOGIC-1044: Added 4-bit counters and readme

Author: Gabriel Urs

Binary_Counter_4Bit/Binary_Counter_4Bit.sch

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Binary_Counter_4Bit/README.MD

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+<!-- Please do not change this html logo with link -->
+
+<a href="https://www.microchip.com" rel="nofollow"><img src="images/microchip.png" alt="MCHP" width="300"/></a>
+
+# Binary Counter 4Bit
+
+The module has Reset, Enable and Clock inputs.
+
+The counter clock can be configured by the user and is not dependent on CLB Clock Selection. The clock signal can be generated, for example, by using a timer overflow or the CLB clock.
+
+| **Reset** | **Enable** | **Output** |
+|:---------:|:----------:|:----------:|
+|     0     |      0     |  Disabled  |
+|     0     |      1     |   Enabled  |
+|     1     |      0     |    Reset   |
+|     1     |      1     |    Reset   |
+
+The schematic is shown in the below image. A positive edge detector is used for the Clock input.
+<br><img src="images/binary_counter_4bit.png" width="600">
+
+## Demo
+
+The demo shows an exemple of using the counter. TMR0_Overflow is used as a Clock input.
+<br><img src="images/binary_counter_4bit_demo.png" width="600">
+
+ The waveforms obtained on each output pin are shown in the below image.
+<br><img src="images/binary_counter_4bit_waveforms.png" width="600">

Binary_Counter_4Bit/images/binary_counter_4bit.png

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+{
+    "type": "CLB Synthesizer Library Module",
+    "version": "1.0",
+    "name": "Binary_Counter_4Bit",
+    "files": [
+        {
+            "name": "Binary_Counter_4Bit",
+            "file": "Binary_Counter_4Bit.sch",
+            "id": "bc961f95-aab6-4bca-b7f8-660c4ef6d2ab",
+            "type": "diagram"
+        }
+    ],
+    "entryFile": ""
+}

Binary_Counter_4Bit/images/binary_counter_4bit_demo.png

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Binary_Counter_4Bit/images/binary_counter_4bit_waveforms.png

@@ -0,0 +1,27 @@
+<!-- Please do not change this html logo with link -->
+
+<a href="https://www.microchip.com" rel="nofollow"><img src="images/microchip.png" alt="MCHP" width="300"/></a>
+
+# Binary Down Counter 4Bit
+
+The module has Reset, Enable and Clock inputs. 
+
+The counter clock can be configured by the user and is not dependent on CLB Clock Selection. The clock signal can be generated for example by using a timer overflow or the CLB clock.
+
+| **Reset** | **Enable** | **Output** |
+|:---------:|:----------:|:----------:|
+|     0     |      0     |  Disabled  |
+|     0     |      1     |   Enabled  |
+|     1     |      0     |    Reset   |
+|     1     |      1     |    Reset   |
+
+The schematic is shown in the below image. A positive edge detector is used for the Clock input.
+<br><img src="images/binary_down_counter_4bit.png" width="600">
+
+## Demo
+
+The demo shows an exemple of using the counter. TMR0_Overflow is used as a Clock input.
+<br><img src="images/binary_down_counter_4bit_demo.png" width="600">
+
+ The waveforms obtained on each output pin are shown in the below image.
+<br><img src="images/binary_down_counter_4bit_waveforms.png" width="600">