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SIEMENS SIMATIC STEP 5/ST V7.0 Manual - Part 1

SIEMENS SIMATIC STEP 5/ST V7.0 Manual - Part 2

SIEMENS SIMATIC STEP 5/ST V7.0 Manual - Part 3

SIEMENS SIMATIC Industrial Software - Sequential Controls with S7-GRAPH

SIEMENS SIMATIC S5 GRAPH 5/II Version 7.1 Manual

Industrial Circuits Application Note - Drive circuit basics

ATMEL 8-Bit Microcontroller with 4K Bytes Flash - AT89C51

COMPLEMENTARY SILICON POWER DARLINGTON TRANSISTORS

STEPPER MOTOR DRIVING

DISCRETE  SEMICONDUCTORS - POWER BIPOLAR TRANSISTORS 

STEPPER MOTOR & DRIVER SELECTION

MATLAB - INSTALLATION GUIDE