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One possible way to layout your gates and pins on the grid

  • The final step will be to connect all our components together. As previously mentioned, we can run wires directly between components or make wireless connections.
  • To make a wired connection, either select the orthogonal node tool or move your mouse over one of the ports on a symbol, the pointer should change to the look like the node tool. Then click and drag from the origin port to the port you wish to reach and release. Be careful not to intersect any other ports as this will cause them to be joined to the wire, although crossing over other wires will not create a connection. You can tell if a wire is connected to something by the large dot, the typical indicator of connections in circuit diagrams. Go ahead and connect up the inputs to the two AND gates so that they will function as the beginning of a MUX.

Possible circuit wiring for the first stage of the MUX

  • While this method is fairly straightforward, it has its disadvantages such as possible unintended connections and vast webs of wiring on more complicated circuits. We can simplify the process with wireless connections.
  • Unfortunately, you cannot directly name ports. Instead we will connect a small piece of wire to the ports and name this wire. Any wires on the grid which share the same name are connected together.
  • Begin by placing short bits of wire at all the remaining ports in the circuit. A length of one on the grid is sufficient though a length of two may be easier to work with. Once placed, right click on the wire and select properties.
  • Under the General tab you can enter a name for the selected wire. As with project names, Quartus won’t allow for spaces so either remove them or use underscores. To connect any other wire with this named one, simply repeat the procedure. Using this wireless method, connect the remainder of the MUX together.

Example wireless connections

  • The final step before we get to pin connections is to make sure our circuit is functional. On the left side of the screen is the Tasks menu where we can find a variety of commands to create a finished design file. Eventually we will want to compile our whole design, though for now we can simply go through the Anaylsis&Synthesis step. Double click on Analysis&Synthesis for Quartus to check over the circuit for any potential issues such as unconnected ports. If Quartus finds something wrong it will halt the process and display the error in the message box at the bottom of the screen.
An unsuccessful analysis&synthesis process due to an unconnected port

Defining i/o connections

  • Once we’ve successfully performed Analysis&Synthesis we are ready to move on to defining pin connections. In order to do this we first need to know the pin addresses of the input and output devices on our DE0 board. These can be found in the DE0 User Manual on pages 24-29, pages 27-32 of the PDF. For now we will only be looking at the switch and LED pin assignments.
  • For each entry in the assignment table, the signal name corresponds to the identifier printed on the board next to the relavent device and the pin name tells us where we should connect to in order to access that device.
  • To specify these connections we will use the Pin Planner located under Assignments->Pin Planner. By performing Analysis and Synthesis earlier, we gave Quartus information on how many I/O pins we had on our circuit diagram and what their names were. Now we just need to connect these with pins on the board. By putting in the name of a physical pin under the Location column in the Pin Planner, we tie that point on our board to the specified point on our circuit.
  • Although we’ll be using a particular pin layout here, you can setup your pin assignments in whatever way you feel works best for you. On future labs/projects pin layouts will already be setup so the labbies and in particular the project graders will be expecting a particular board setup and you should leave assignments as they are.
  • For this example we’ll use the rightmost slider switch, SW[0], for our select signal. Since we can see in the user manual that SW[0]is tied to PIN_J6, we simply type this, or even just J6 and it will fill in the name, into the Location column next to the “select” listing under the Node Name column. We’ll continue in this fashion, assigning “data1” to SW[1] at PIN_H5, “data2” to SW[2]at PN_H6, and assigning “out” to the rightmost LED, LEDG[0] at PIN_J1.

Questions & Answers

What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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