From 10b1c4245aa9e005a2f9315bfe0af33384030772 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@lysator.liu.se>
Date: Tue, 19 Feb 2019 11:42:05 +0100
Subject: Tue, 19 Feb 2019 11:42:05 +0100

---
 VHDL.wiki | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

(limited to 'VHDL.wiki')

diff --git a/VHDL.wiki b/VHDL.wiki
index 216b9e4..2570344 100644
--- a/VHDL.wiki
+++ b/VHDL.wiki
@@ -11,6 +11,8 @@
       - [[#VHDL#Typer av satser#with-select-when|with-select-when]]
       - [[#VHDL#Typer av satser#when-else|when-else]]
     - [[#VHDL#Operatorer|Operatorer]]
+    - [[#VHDL#Bibliotek|Bibliotek]]
+      - [[#VHDL#Bibliotek#Numeric_std|Numeric_std]]
 
 = VHDL =
 
@@ -197,4 +199,22 @@ end architecture behavior2;
 }}}
 
 == Operatorer ==
-- `&` :: konkattenerirng, $(`0' \& `1' = ``01'')$
+- `&` :: konkattenerirng, (`'0' & '1' = "01"`).
+
+== Bibliotek ==
+=== Numeric_std ===
+{{{VHDL
+use ieee.numeric_std.all
+}}}
+
+Låter oss även hantera en bitvektor som ett tal. 
+
+{{{VHDL
+signal q : unsigned (3 downto 0);
+
+q <= q + 1;
+if q = 10 ...
+   q <= "0011";
+   q(0) <= '1';
+}}}
+
-- 
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