1. Letters (अक्षर) Letter : Letter वह सबसे छोटी इकाई है जिसका प्रयोग कर हम कोई अंग्रेजी शब्द लिखते हैं। A letter is the smallest unit with the help of which we write an English word अंग्रेजी में 26 letters है ।इन्हें हम दो प्रकार से लिखते … Read more
In Olden times, do you know how Information was presented to a large audience ? Let us learn in 1879 the first device called zoopraxiscope was developed. It was used to show moving image to large audience. MgsGyanBooks Gradually, the technology used in zoopraxiscope developed of our dear and lead to the development of the modern … Read more