The writing system can be said to be the greatest invention after language. The initial writing system was simple and certain pictures were specified for certain ideas. Afterward, those pictures were named specifically, and pictorial profiles were created for effective communication. Hence, the writing system has evolved over a long period of time and is transformed into the modern writing system. Languages were just a combination of a few sounds initially. The constant repetition of these sounds turned them into letters which are termed alphabets in the Dictionary of Linguistics. In addition to the origin of writing system, this paper also delves deep into the origin and evolution of Punjabi and Urdu scriptures and alphabets.  Punjabi and Urdu scripts are also regarded as Arabic-Persian scripts. Punjabi and Urdu alphabets are created after making additions to Persian letters. Different experts in Linguistics argue that owing to the changes in languages through the ages, there is a difference in the number of Punjabi and Urdu alphabets which is the fundamental research question in this paper.