{signal: [
  {name: 'clk',  wave: 'p.........'},
  {name: 'dat',  wave: 'x345..6x7x', data: ["A", "B", "C", "D", "E"]},
  {name: 'val',  wave: '01.....010'},
  {name: 'rdy',  wave: '01.0.1...0'},
  {name: 'lst',  wave: '0.......10'},
]}