6. Mark the statements concerning FPGAS which are true. FPGAS must be programmed (customized) in the foundry. The advantage of FPGAS regarding Gate Arrays and Standard Cells is that this customization process is faster and less expensive. FPGAS consist of a set of basic blocks and interconnections layers that can be customized. The programming (configuration) of the basic blocks and the interconnection layers in a FPGA is automatically performed by specific computer aided design tools (CAD tolls). Thanks to them, the designer works with a component library (logic gates, memory elements, etc.) and doesn't have to worry about the dumping of his/her circuit into the FPGA ("technology mapping"). FPGAS are particularly suitable for the implementation of prototypes and small series. The basic blocks are identical for all the FPGAS. The integration density of current FPGAS is limited to a few hundreds of logical gates.