Desenvolvimento de uma calculadora baseada numa FPGA e num touch panel

Abstract

This paper describes an FPGA-based calculator, which executes four arithmetical operations (+, -, *, /) over three operands (two digits each), and interacts with a touch panel, connected to the FPGA. The calculator functionality has been described in VHDL and the design was done in the ISE 5.1 software of Xilinx [1,2]. The circuit was implemented in FPGA XC2S300E of Spartan-IIE family available on the prototyping board TE-XC2Se of TrenzElectronic. The major advantages of this FPGA are the low cost and a well defined architecture of primary components that are similar to FPGAs of Virtex family.