diff --git a/tech/D-flip-flop.wiki b/tech/D-flip-flop.wiki
new file mode 100644
index 0000000..304df79
--- /dev/null
+++ b/tech/D-flip-flop.wiki
@@ -0,0 +1,11 @@
+= D-flip-Flop =
+
+A D-flip-flop or data flip flop is a type of flip flop that can store a bit,
+and has two inputs and two outputs
+
+* D (data) input
+* CLK (Clock) input
+* Q (Stored Data) output
+* NOT_Q (Stored Data) output
+
+The D flip flop only changes on the rising edge of the clock.
diff --git a/tech/Flip-flop.wiki b/tech/Flip-flop.wiki
new file mode 100644
index 0000000..b5a3d71
--- /dev/null
+++ b/tech/Flip-flop.wiki
@@ -0,0 +1,5 @@
+= Flip Flop =
+
+A Flip flop is a type of circut that is capable of storing a state, or acting
+as a form of memory. Flip flops almost always feed part of their output back
+into their input
diff --git a/tech/electronics.wiki b/tech/electronics.wiki
index 3ac652c..e91a7fa 100644
--- a/tech/electronics.wiki
+++ b/tech/electronics.wiki
@@ -7,10 +7,11 @@ Both digital and analog components
 
 * [[multiplexer|Multiplexer]]
 
-
 == Sequential ==
 
 * [[buffer|Buffer]]
+* [[Flip-flop]]
+* [[registers|Registers]]
 
 == Theoretical ==
 
diff --git a/tech/registers.wiki b/tech/registers.wiki
new file mode 100644
index 0000000..40a803b
--- /dev/null
+++ b/tech/registers.wiki
@@ -0,0 +1,16 @@
+= Registers =
+
+A register is a group of [[Flip-flop]]s.
+
+* Each flip flop shares a common clock
+* Each flip flop is capable of storing 1bit of info
+
+In general _a n-bit register is a group of n-flip-flops_
+
+Registers with combinational gates hold binary info, and the gates can
+determine how info is moved in/out of the register
+
+== 4 bit register ==
+
+* Group of 4 [[D-flip-flop]]
+