diff --git a/05_Computer_Architecture/04_HACK/Hack_tb.gtkw b/05_Computer_Architecture/04_HACK/Hack_tb.gtkw
deleted file mode 100644
index 2d04d5a..0000000
--- a/05_Computer_Architecture/04_HACK/Hack_tb.gtkw
+++ /dev/null
@@ -1,68 +0,0 @@
-[*]
-[*] GTKWave Analyzer v3.3.104 (w)1999-2020 BSI
-[*] Mon Nov 28 10:58:53 2022
-[*]
-[dumpfile] "/home/micha/gitlab/nand2tetris/05_Computer_Architecture/03_HACK/Hack_tb.vcd"
-[dumpfile_mtime] "Mon Nov 28 10:58:25 2022"
-[dumpfile_size] 3140780
-[savefile] "/home/micha/gitlab/nand2tetris/05_Computer_Architecture/03_HACK/Hack_tb.gtkw"
-[timestart] 0
-[size] 1920 963
-[pos] -1 -1
-*-8.420643 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-[treeopen] Hack_tb.
-[treeopen] Hack_tb.HACK.
-[sst_width] 281
-[signals_width] 200
-[sst_expanded] 1
-[sst_vpaned_height] 261
-@28
-Hack_tb.HACK.clk
-@200
--IN
-@28
-Hack_tb.RST
-Hack_tb.BUT
-@200
--CPU
-@22
-Hack_tb.HACK.pc[15:0]
-Hack_tb.HACK.instruction[15:0]
-Hack_tb.HACK.CPU.regA[15:0]
-Hack_tb.HACK.CPU.regD[15:0]
-@200
--MEM
-@22
-Hack_tb.HACK.MEMORY.address[15:0]
-@28
-Hack_tb.HACK.MEMORY.load
-@22
-Hack_tb.HACK.MEMORY.out[15:0]
-@200
--OUT
-@28
-Hack_tb.LED[1:0]
-@200
--DEBUG
-@28
-Hack_tb.HACK.loadDEBUG0
-@24
-Hack_tb.HACK.outDEBUG0[15:0]
-@28
-Hack_tb.HACK.loadDEBUG1
-@24
-Hack_tb.HACK.outDEBUG1[15:0]
-@28
-Hack_tb.HACK.loadDEBUG2
-@25
-Hack_tb.HACK.outDEBUG2[15:0]
-@28
-Hack_tb.HACK.loadDEBUG3
-@22
-Hack_tb.HACK.outDEBUG3[15:0]
-@28
-Hack_tb.HACK.loadDEBUG4
-@22
-Hack_tb.HACK.outDEBUG4[15:0]
-[pattern_trace] 1
-[pattern_trace] 0
diff --git a/05_Computer_Architecture/04_HACK/leds.png b/05_Computer_Architecture/04_HACK/leds.png
index 78e150f..dc5273f 100644
Binary files a/05_Computer_Architecture/04_HACK/leds.png and b/05_Computer_Architecture/04_HACK/leds.png differ
diff --git a/05_Computer_Architecture/04_HACK/mult.png b/05_Computer_Architecture/04_HACK/mult.png
index 2da83b0..5a497fc 100644
Binary files a/05_Computer_Architecture/04_HACK/mult.png and b/05_Computer_Architecture/04_HACK/mult.png differ