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+# Pixie16_GUI_DAQ
+This is a GUI DAQ for XIA Pixie16 digitizer.
+
+# requires 
+PlxSDK8.0+, installed at /usr/opt/PlxSdk
+PixieSDK 3.3, installed at /usr/opt/xia/PixieSDK
+CERN ROOT 6.0+ (using 6.24/06)
+
+The program is developing on Debian 10. using g++ 8.3.0, using Pixie16 16-bit 250MHz revision F.
+
+# make
+just $make, it will create object files and link all together to pixieDAQ
+it will also make test and example under testing folder.
+
+# Pixie16Class
+this is the main class for controlling the pixie16 digitizer. 
+It unfolds some control for the CHANNEL_CSRA. It likes a C++ wrapper for the C code for the PixieSDK. Before PixieSDK3.3, it also decode the data.
+
+# DataBlock
+this is a C++ class for a data Block, which is a Block for pixie output.