Patch cords were expensive, could be damaged by use (creating hard-to-find intermittent faults), and made complex patches difficult and time-consuming to recreate. Thus, later analog synthesizers used the same building blocks, but integrated them into single units, eliminating patch cords in favour of integrated signal routing systems. The most popular of these was the Minimoog. In 1970, Moog designed an innovative synthesizer with a built-in keyboard and without modular design—the analog circuits were retained, but made interconnectable with switches in a simplified arrangement called "normalization". Though less flexible than a modular design, normalization made the instrument more portable and easier to use. This first pre-patched synthesizer, the Minimoog, became highly popular, with over 12,000 units sold. The Minimoog also influenced the design of nearly all subsequent synthesizers, with integrated keyboard, pitch wheel and modulation wheel, and a VCO->VCF->VCA signal flow. In the 1970s, miniaturized solid-state components let manufacturers produce self-contained, portable instruments, which musicians soon began to use in live performances. Electronic synthesizers quickly become a standard part of the popular-music repertoire. The first movie to use music made with a (Moog) synthesizer was the James Bond film "On Her Majesty's Secret Service" in 1969. After the release of the film, composers produced a large number of movie soundtracks that featured synthesizers.