diff --git a/readme.md b/readme.md
index 82d9b10..147db33 100644
--- a/readme.md
+++ b/readme.md
@@ -1,20 +1,36 @@
-# Interfacing ST7789 LCD vis SPI
+# Interfacing ST7789 LCD using SPI
 
 [Reference](https://raspberrypi.stackexchange.com/questions/105364/how-to-connect-st7789-lcd-to-raspberry-pi)
 
+## Technical Specifications
+
+* Display 
+  + Resolution: 240 x 240 pixels
+  + Color 	  : RGB Full Color
+  +Interface  :	SPI 
+* Operating Ratings 
+  + DC Power Input    : 	3.3V
+  + Operating Current :	\<30mA (typical)
+* Dimensions 		
+  + Module Size (PCB) 	: 39.5 x 28mm (1.56″ x 1.1″)
+  + Display diagonal 	: 33mm (1.3″)
+  + Display (W x H) 	: 26 x 26mm (1.02 x 1.02″)
+* Display Controller
+  + SH1106
+
 ## Pinout
 
 st7789
 
 Label | Description
 ------|-----
-BLK | Backlight
-DC | Data/Command
-RES | Reset
-SCK | Serial Clock
-DIN | Serial Data
-VCC | 3V3
-GND | Ground
+BLK | Backlight Control.  If left unconnected, the backlight is always on.  Pull LOW to turn off
+DC | Data / Command.  Determines type type of data being sent to the display.  LOW = Command, HIGH = Data
+RES | Reset for the ST7789 LCD controller.  Normally HIGH, pull LOW to reset
+SCK | Connects to SPI SCL (Clock)
+DIN | Connect to SPI MOSI (Data)
+VCC |  Connect to 3.3V.  This can come from the MCU or  separate power supply
+GND | Connect to system ground.  This ground needs to be in common with the MCU.
 
 
 Interfacing
@@ -30,7 +46,7 @@ DC   | BCM 9  | 21  | SPI0 MISO
 RES  | BCM 19 | 35  | SPI1 MISO ?
 BL   | BCM 27 | 13  | GPIO 2
 
-![](./SPI.png)
+![](SPI.PNG)
 
 ## [Sample Code](https://github.com/pimoroni/st7789-python.git)