TACL

TACL (the Tandem Advanced Command Language) is the scripting programming language used in Tandem Computers. TACL is the shell. TACL (the Tandem Advanced Command Language) is the scripting programming language used in Tandem Computers. TACL is the shell. Tandem Computers were originally designed and sold by Tandem Computers, Inc., based in Cupertino, CA. These were the first commercially available parallel processing computers, originally referred to as 'mini-computers'. Tandem's strategy was the emerging concept of 'continuous availability' that relied on mirrored disks, their controllers and software, and a well engineered operating system (Guardian, and later NonStop Kernel or NSK) to ensure continuous application availability by ensuring the system could survive any single point of hardware failure. Tandem Computers, Inc. was acquired by Compaq Computer Corporation in 1997; and Compaq Computer Corp. was subsequently purchased by Hewlett-Packard in 2001. Today they are known as 'HPE Nonstop', with products such as the HP Integrity NonStop Blade systems.