Join the 5M+ who have taken Harvard CS50

“CS50 changed my life.” — former CEO of YouTube. ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ {preheader_text} [edX Logo](~/AAQRxQA~/RgRm2rcNP0R7aHR0cHM6Ly93d3cuZWR4Lm9yZy8_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~) [Courses](~/AAQRxQA~/RgRm2rcNP0SMaHR0cHM6Ly93d3cuZWR4Lm9yZy9zZWFyY2g_dGFiPWNvdXJzZSZ1dG1fc291cmNlPWJyYXplJnV0bV9tZWRpdW09ZW1haWwmdXRtX2NhbXBhaWduPVdlZG5lc2RheV9EZWRpY2F0ZWRfSmlyYV8yMDIzMDkwNiZ1dG1fY29udGVudD1WYXJpYW50IDFXA3NwY0IKZPENMvhkCkOD81IbdHJpc3RyYW1iYWxkd2luOTFAZ21haWwuY29tWAQAAABA) / [Programs](~/AAQRxQA~/RgRm2rcNP0SNaHR0cHM6Ly93d3cuZWR4Lm9yZy9zZWFyY2g_dGFiPXByb2dyYW0mdXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~) / [My Account](~/AAQRxQA~/RgRm2rcNP0SCaHR0cHM6Ly9hdXRobi5lZHgub3JnL2xvZ2luP3V0bV9zb3VyY2U9YnJhemUmdXRtX21lZGl1bT1lbWFpbCZ1dG1fY2FtcGFpZ249V2VkbmVzZGF5X0RlZGljYXRlZF9KaXJhXzIwMjMwOTA2JnV0bV9jb250ZW50PVZhcmlhbnQgMVcDc3BjQgpk8Q0y-GQKQ4PzUht0cmlzdHJhbWJhbGR3aW45MUBnbWFpbC5jb21YBAAAAEA~) [Harvard CS50: Intro to Computer Science. Join 5M+ learners elevating their skills](~/AAQRxQA~/RgRm2rcNP0SraHR0cHM6Ly93d3cuZWR4Lm9yZy9wbHAvaW50cm9kdWN0aW9uLWNvbXB1dGVyLXNjaWVuY2UtaGFydmFyZHgtY3M1MHg_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~) Are you an aspiring developer? Just curious about coding? Somewhere in between? Then you’re a perfect fit for CS50, Harvard University’s renowned introductory course in computer science. With CS50 on edX, you’ll experience Harvard-led, self-paced computer science education that’s actually fun — and accessible to beginners. No coding experience required. We’ve heard from many CS50 alumni (including a former CEO of YouTube) that the course helped kickstart their tech careers. We can’t wait to see where it takes you. Experience the power of CS50 for yourself. [Enroll now](~/AAQRxQA~/RgRm2rcNP0SraHR0cHM6Ly93d3cuZWR4Lm9yZy9wbHAvaW50cm9kdWN0aW9uLWNvbXB1dGVyLXNjaWVuY2UtaGFydmFyZHgtY3M1MHg_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~) [CS50 changed my life. It gave me a great foundation, and I'm continuing to learn every day as technology changes.](~/AAQRxQA~/RgRm2rcNP0SraHR0cHM6Ly93d3cuZWR4Lm9yZy9wbHAvaW50cm9kdWN0aW9uLWNvbXB1dGVyLXNjaWVuY2UtaGFydmFyZHgtY3M1MHg_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~) [How CS50 gets you career-ready](~/AAQRxQA~/RgRm2rcNP0SraHR0cHM6Ly93d3cuZWR4Lm9yZy9wbHAvaW50cm9kdWN0aW9uLWNvbXB1dGVyLXNjaWVuY2UtaGFydmFyZHgtY3M1MHg_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~) Relevant curriculum Get familiar with widely used programming languages, such as C, Python, SQL, and JavaScript. Teaching that sticks Professor Malan’s engaging style keeps you focused and helps you retain complex information. Harvard-backed certificate Upgrade your enrollment ($199) to earn a certificate of completion that proves your proficiency. [Close up of person typing](~/AAQRxQA~/RgRm2rcNP0SraHR0cHM6Ly93d3cuZWR4Lm9yZy9wbHAvaW50cm9kdWN0aW9uLWNvbXB1dGVyLXNjaWVuY2UtaGFydmFyZHgtY3M1MHg_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~) [Harvard CS50: Introduction to Computer Science](~/AAQRxQA~/RgRm2rcNP0SraHR0cHM6Ly93d3cuZWR4Lm9yZy9wbHAvaW50cm9kdWN0aW9uLWNvbXB1dGVyLXNjaWVuY2UtaGFydmFyZHgtY3M1MHg_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~) An introduction to the intellectual enterprises of computer science and the art of programming. [Enroll now](~/AAQRxQA~/RgRm2rcNP0SraHR0cHM6Ly93d3cuZWR4Lm9yZy9wbHAvaW50cm9kdWN0aW9uLWNvbXB1dGVyLXNjaWVuY2UtaGFydmFyZHgtY3M1MHg_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~) ~/AAQRxQA~/RgRm2rcNP0R7aHR0cHM6Ly93d3cuZWR4Lm9yZy8_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~ ~/AAQRxQA~/RgRm2rcNP0SDaHR0cHM6Ly93d3cuZmFjZWJvb2suY29tL2VkWD91dG1fc291cmNlPWJyYXplJnV0bV9tZWRpdW09ZW1haWwmdXRtX2NhbXBhaWduPVdlZG5lc2RheV9EZWRpY2F0ZWRfSmlyYV8yMDIzMDkwNiZ1dG1fY29udGVudD1WYXJpYW50IDFXA3NwY0IKZPENMvhkCkOD81IbdHJpc3RyYW1iYWxkd2luOTFAZ21haWwuY29tWAQAAABA ~/AAQRxQA~/RgRm2rcNP0SEaHR0cHM6Ly90d2l0dGVyLmNvbS9lZFhPbmxpbmU_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~ ~/AAQRxQA~/RgRm2rcNP0SLaHR0cHM6Ly93d3cubGlua2VkaW4uY29tL2NvbXBhbnkvZWR4P3V0bV9zb3VyY2U9YnJhemUmdXRtX21lZGl1bT1lbWFpbCZ1dG1fY2FtcGFpZ249V2VkbmVzZGF5X0RlZGljYXRlZF9KaXJhXzIwMjMwOTA2JnV0bV9jb250ZW50PVZhcmlhbnQgMVcDc3BjQgpk8Q0y-GQKQ4PzUht0cmlzdHJhbWJhbGR3aW45MUBnbWFpbC5jb21YBAAAAEA~ ~/AAQRxQA~/RgRm2rcNP0SKaHR0cHM6Ly93d3cuaW5zdGFncmFtLmNvbS9lZHhvbmxpbmU_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~ ~/AAQRxQA~/RgRm2rcNP0SEaHR0cHM6Ly93d3cucmVkZGl0LmNvbS9yL2VkWC8_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~ ~/AAQRxQA~/RgRm2rcNP0SNaHR0cHM6Ly9lZHguYXBwLmxpbmsvZW1haWwtYXBwLWluc3RhbGw_dXRtX3NvdXJjZT1icmF6ZSZ1dG1fbWVkaXVtPWVtYWlsJnV0bV9jYW1wYWlnbj1XZWRuZXNkYXlfRGVkaWNhdGVkX0ppcmFfMjAyMzA5MDYmdXRtX2NvbnRlbnQ9VmFyaWFudCAxVwNzcGNCCmTxDTL4ZApDg_NSG3RyaXN0cmFtYmFsZHdpbjkxQGdtYWlsLmNvbVgEAAAAQA~~ ~/AAQRxQA~/RgRm2rcNP0SMaHR0cHM6Ly9lZHguYXBwLmxpbmsvZW1haWwtYXBwLWluc3RhbD91dG1fc291cmNlPWJyYXplJnV0bV9tZWRpdW09ZW1haWwmdXRtX2NhbXBhaWduPVdlZG5lc2RheV9EZWRpY2F0ZWRfSmlyYV8yMDIzMDkwNiZ1dG1fY29udGVudD1WYXJpYW50IDFXA3NwY0IKZPENMvhkCkOD81IbdHJpc3RyYW1iYWxkd2luOTFAZ21haWwuY29tWAQAAABA edX is the trusted platform for education and learning. 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