Keywords : Computer Based Information System, blood stock management, SADT (Structured Analysis and Design Technique), web based application program, VASMS. Roni Zakaria ∗∗∗∗ , Muhammad Hisjam, Wicaksono Febriantoro ∗ Correspondence: ronny01@runbox.com Jurusan Teknik Industri, Universitas Sebelas Maret, Surakarta Performa (2008) Vol. 7, No.2: 17-30 2. Metodologi Penelitian 18 Performa Vol.7, No. 2