How to design a vending machine circuit diagram using logic gates only?

Assalam o AlaikumI'm going to make Vending Machine with logic gates. I don't have any idea. Can anyone Plzzz help me in finding circuit diagram????

If you type in "vending machine logic" in a WWW search engine, it will turn up countless designs, this is a typical logic design teaching project. There are quite a number of approaches to the problem, the most complex use state machines.These days it would be more common to throw a microprocessor at the problem.
As a typical example using logic gates, look at this document , vending machine design
Is this a personal or university project, and  what sort of experience have you had in working with logic design, breadboards and logic chips. Cheers,Richard

Thanks Richard.I got different designs in Google Search but they are not understandable to me.
I have also checked your given link before posting here.Actually, I got a task in university to make Vending Machine with the help of logic gates without using Microprocessor or Arduino . I have made normal logic designs on breadboard but don't  have much experience with logic chips.Bro I want to made only a simple type of vending Machine having one input and one output.Circuit Diagram for Simulation????

If you can come up with a logical design, it will include OR, AND, and inverters, which allow NOR and NAND gates. I am concerned that you couldn't follow the designs you have found, since once you have grasped the principle, it is possible to adapt the given idea to another scenario.The gate types (as mentioned above) are created for you when you minimize the logic terms. To find a physical device which represents the derived logic type you need to go to  data sheets for a logic family type, these days it would be CMOS of some description, and sort through the chip types to find the parts you need. This can be done quickly by typically going to the front of a data book, where the families are grouped according to function, such as AND, OR, NAND, NOR etc.The selected chips then need to be placed on solderless breadboard (there is a youtube video of such a design) and the inputs and outputs hooked up with wires. Power supplies must also be connected, normally 3.3 or 5V, depending on the logic family. Usually gates have unused inputs, these must be connected to the ground or power supply, depending on the gate and logic being used. There is a lot of information on using logic families and logic gates on the web. The Art of electronics  has a section on using logic, as well, for example, and there are simpler explanations in many other books.Cheers,Richard

Richard Bro Thanks a lot. Hope so it'll help in my project. 

If you can come up with a logical design, it will include OR, AND, and inverters, which allow NOR and NAND gates.