} var client = ShopifyBuy.buildClient({ Here’s a list of the main cookies we use, and what we use them for: Each web browser handles cookie management differently, please follow instructions for your chosen browser: Keep an eye on your inbox for a monthly roundup which includes all of the top content on Electromaker.io. "font-weight": "bold" "productSet": { This DIY PIC programmer is a continuation of our PIC programming basics tutorial. (Available Globally)" WR is the write pin, and this is used to save data into the chip. "variantId": "all", In this project, we will need to write programs for the Z80 that will get stored in ROM, but we need to learn how to get these programs into the ROM chip for the computer to read. "max-width": "100%", script.src = scriptURL; "styles": { In order to expand our I/O, we will instead incorporate two 74HC374 latches. To keep things simple, we will have the programmer on the same breadboard as the computer. ESP8266 a Complete Beginners Guide (IOT) LED1 glows to indicate the application of the programming pulse to the EPROM. }, } "color": "#ffffff" "product": { This also allows us to reserve special byte characters for commands such as save data, load data, and reset messages. /*