Adapted Accumulator problem/solution

src/main/scala/problems/Accumulator.scala

 // See LICENSE.txt for license details.
+// January 20th, 2018	-adapted for Learning Journey
 package problems
 
-import chisel3._
+import Chisel._
 
 // Problem:
 //
 // Count incoming trues
 // (increase counter every clock if 'in' is asserted)
 //
-class Accumulator extends Module {
-  val io = IO(new Bundle {
-    val in  = Input(UInt(1.W))
-    val out = Output(UInt(8.W))
-  })
-
-  // Implement below ----------
-
-  io.out := 0.U
-
-  // Implement above ----------
+class Accumulator extends Module { 
+  val io = new Bundle { 
+    val in  = UInt(INPUT, 1) 
+    val out = UInt(OUTPUT, 8) 
+  } 
+ 
+  // flush this out ... 
+ 
+  io.out := UInt(0) 
 }

src/main/scala/solutions/Accumulator.scala

 // See LICENSE.txt for license details.
+// January 20th, 2018	- adapted for Learning Journey
 package solutions
 
-import chisel3._
+import Chisel._
 
 // Problem:
 //
 // Count incoming trues
 // (increase counter every clock if 'in' is asserted)
-//
 class Accumulator extends Module {
-  val io = IO(new Bundle {
-    val in  = Input(UInt(1.W))
-    val out = Output(UInt(8.W))
-  })
-  val accumulator = RegInit(0.U(8.W))
+  val io = new Bundle {
+    val in  = UInt(width = 1, dir = INPUT)
+    val out = UInt(width = 8, dir = OUTPUT)
+  }
+  val accumulator = Reg(init=UInt(0, 8))
   accumulator := accumulator + io.in
   io.out := accumulator
 }