Learning Chisel: Mux to decode unsigned integer to 7-seg LED

SevenSegLED.scala

import chisel3._
import chisel3.util._

class SevenSegLED extends Module {
  val io = IO(new Bundle {
    val input = Input(UInt(4.W))
    val output = Output(UInt(8.W))
  })

  io.output := MuxCase(
    "b1111_1111".U,
    Seq(
      (io.input === "h0".U) -> "b1100_0000".U,
      (io.input === "h1".U) -> "b1111_1001".U,
      (io.input === "h2".U) -> "b1010_0100".U,
      (io.input === "h3".U) -> "b1011_0000".U,
      (io.input === "h4".U) -> "b1001_1001".U,
      (io.input === "h5".U) -> "b1001_0010".U,
      (io.input === "h6".U) -> "b1000_0010".U,
      (io.input === "h7".U) -> "b1111_1000".U,
      (io.input === "h8".U) -> "b1000_0000".U,
      (io.input === "h9".U) -> "b1001_1000".U,
      (io.input === "hA".U) -> "b1000_1000".U,
      (io.input === "hB".U) -> "b1000_0011".U,
      (io.input === "hC".U) -> "b1100_0110".U,
      (io.input === "hD".U) -> "b1010_0001".U,
      (io.input === "hE".U) -> "b1000_0110".U,
      (io.input === "hF".U) -> "b1000_1110".U,
    )
  )
}