--- nand.py-
+++ nand.py
@@ -471,8 +471,9 @@
 			self.jt_out.new_pin().conn = Lamp(self, lamp_name).inp
 
 class Lamp(Obj):
-	def __init__(self, parent, name='lamp', latency=None, pos=(0,0)):
+	def __init__(self, parent, name='lamp', latency=None, pos=(0,0), show_inf={}):
 		Obj.__init__(self, parent, name, latency, pos)
+		self.show_inf = show_inf
 		Pin(self, 'inp')
 
 	def update(self):
@@ -483,11 +484,19 @@
 
 	def show(self, v):
 		(x, y) = self.get_pos()
+		label = self.show_inf.get('label', self.name)
+		rev = self.show_inf.get('rev', True)
+
+		if not rev and not v:
+			label = ' ' * len(label)
+		if rev and not v:
+			rev = False
+
 		lst = [
 			'ESC[{};{}H'.format(y+1, x+1), # move
-			'ESC[{}m'.format(7) if v else '', # reverse on if v
-			self.name,
-			'ESC[{}m'.format(27) if v else '', # reverse off if v
+			'ESC[{}m'.format(7) if rev else '', # reverse on if v
+			label,
+			'ESC[{}m'.format(27) if rev else '', # reverse off if v
 		]
 		print ''.join(lst)
 		sys.stdout.flush()
@@ -505,6 +514,45 @@
 	def conn_targ(self, targ, targ_pin_name, n=-1):
 		n = self.n if n < 0 else n
 		conn_n( n, targ, 0, targ_pin_name, self, 0, 'inp' )
+
+class Lamp_7seg(Obj):
+	def __init__(self, parent, name='lamp_7seg', latency=None, pos=(0,0)):
+		Obj.__init__(self, parent, name, None, pos)
+		lst = [
+			(1,0, '---'),
+			(0,1, '|'),
+			(4,1, '|'),
+			(1,2, '---'),
+			(0,3, '|'),
+			(4,3, '|'),
+			(1,4, '---'),
+		]
+		for (i, (x, y, label)) in enumerate(lst):
+			show_info = {'label': label, 'rev':False}
+			lamp = Lamp( self, name_i('lamp', i), latency, (x,y), show_info )
+			Pin( self, name_i('inp', i), 'L' ).conn = lamp.inp
+
+	def conn_targ(self, targ, targ_pin_name):
+		conn_n( 7, targ, 0, targ_pin_name, self, 0, 'inp' )
+
+class DECODER_7seg(Obj):
+	def __init__(self, parent, name='dec_7seg', latency=10):
+		Obj.__init__(self, parent, name)
+		dlst = [
+			0x77, 0x24, 0x5d, 0x6d, 0x2e, 0x6b, 0x7b, 0x25,
+			0x7f, 0x6f, 0x3f, 0x7a, 0x53, 0x7c, 0x5b, 0x1b,
+		]
+		ROM(self, 7, 4, dlst, 'rom', latency)
+		Pin(self, 'en', 'L').conn = self.rom.en
+		for i in range(4):
+			Pin( self, name_i('inp', i), 'L' )
+		conn_n(4, self, 0, 'inp', self.rom, 0, 'A')
+		for i in range(7):
+			Pin( self, name_i('out', i), 'L' )
+		conn_n(7, self.rom, 0, 'D', self, 0, 'out')
+
+	def conn_targ(self, targ, targ_pin_name):
+		conn_n( 7, self, 0, 'out', targ, 0, targ_pin_name )
 
 class Sched:
 	def __init__(self):