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TASK 1: (LO1.1) Evaluate the design characteristics of typical programmable logic devices. Your evaluation will need to include: Unitary Modular Rack-mounted TASK 2: Describe different types of input and output devices for programmable logic devices. Your description will need to include: Mechanical switches Non-mechanical digital sources Transducers Relays TASK 3 Describe the internal architecture of a typical programmable logic device. Your description must include a sketch and the following information: Central Processor Unit (CPU) Arithmetic Logic Unit (ALU) Storage devices Memory Input and output units Opto-isolators Flags Shift registers TASK 5: (LO1.4b) Describe the operational characteristics of a typical programmable logic device. Your description must include the following information: Scanning inputs Executing logic operations Continuous updating of outputs Scan time