Computer Pariksha 20-20 (कम्प्यूटर परीक्षा 20-20), written by Dr Rajeev 'Lekhak' and published by Disha under its Gyan Sangrah Series, covers the computer section of the competitive examinations. The complete book is written in Hindi (Devanagari script), so aspirants preparing in the Hindi medium can study the subject in their own language. This is the 11th Edition. The book gives chapter-wise explanations of examination questions from 2004 to September 2025 (अध्यायवार परीक्षा (2004-सितम्बर, 2025) प्रश्नों की व्याख्या). Computer is a section where candidates lose marks to terminology rather than to difficulty — shortcut keys, file formats, generations of hardware, network and internet terms, and software versions all turn on exact recall. Twenty-one years of actual questions explained chapter by chapter shows which of these the boards keep setting, which is what makes a subject with an endlessly expandable syllabus manageable. It is prepared for CET, Computer Anudeshak (Computer Instructor), PSI, Constable, VDO, Junior Accountant (Kanishtha Lekhakar), RAS, Suchna Sahayak (Informatics Assistant) and RS-CIT. Key Features: Written entirely in Hindi (Hindi medium) for competitive examination aspirants Complete computer syllabus in one volume 11th Edition Chapter-wise explanations of questions from 2004 to September 2025 For CET and Computer Anudeshak examinations For PSI, Constable and VDO examinations For Junior Accountant, RAS and Suchna Sahayak examinations Useful for RS-CIT Fast Track of Success approach By Dr Rajeev 'Lekhak', from the Disha Gyan Sangrah Series यह पुस्तक "कम्प्यूटर परीक्षा-20-20" डॉ. राजीव 'लेखक' द्वारा लिखित है तथा दिशा (ज्ञान संग्रह सीरीज़) द्वारा प्रकाशित है। यह पूर्णतः हिंदी भाषा (Hindi medium) में है। यह 11वाँ संस्करण है। इसमें अध्यायवार परीक्षा (2004 से सितम्बर, 2025) प्रश्नों की व्याख्या दी गई है। यह CET, कम्प्यूटर अनुदेशक, PSI, कॉन्स्टेबल, VDO, कनिष्ठ लेखाकार, RAS, सूचना सहायक तथा RS-CIT के अभ्यर्थियों के लिए अत्यंत उपयोगी है।