![]() The screen scraper might connect to the legacy system via Telnet, emulate the keystrokes needed to navigate the old user interface, process the resulting display output, extract the desired data, and pass it on to the modern system. In such cases, the only feasible solution may be to write a screen scraper that 'pretends' to be a user at a terminal. A robust solution will often require things no longer available, such as source code, system documentation, APIs, or programmers with experience in a 50-year-old computer system. The desire to interface such a system to more modern systems is common. Computer to user interfaces from that era were often simply text-based dumb terminals which were not much more than virtual teleprinters (such systems are still in use today, for various reasons). ![]() As a concrete example of a classic screen scraper, consider a hypothetical legacy system dating from the 1960s-the dawn of computerized data processing.
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