Hardware Computer Information System has become popular all over the world due to its rapid growth. Nowadays, almost everyone uses IS in their daily life. Information system brings a great change in people's lifestyle. It is any type of system and consists of six main elements: people, hardware, software, communications network, data resources, policies and procedures. all of these elements work together to function more effectively (JA Obrein. & GM Marakas, 1975). Information system is used in many fields, the most important field is business and management, in which it supports the operation of the company and helps the manager in making decisions. one of the informational parts is information technology (IT) which can be defined as “a technology that uses computers to collect, process, store, protect and transfer information” (A. Dzaja, 2011). One of the components of the information system through which people use IS is a computer. “Computer is a machine that processes data and performs calculations, and it consists of two main programs which are hardware and software”(). Application of information system in the organization and workplace will help managers and employees to run their business easier and faster, and IS will also make the work more professional. The most commonly used programs in the organization are hardware and software. This article will show the importance of computer hardware.Computer Hardware: According to "Introduction to IS", "the hardware information system is the physical embodiment of an information system, and it is the main element that makes the information system cycle. Enterprise Ireland states that hardware computer program is defined as "information technology...... middle of paper ....... the two registers are first the base register which contains the smallest legal physical memory address. Second, limit register in which contains the size of the range (Silberschatz and Galvin, 1998). Works cited1-Dzaja, A. (2011 Basic concepts of information and communication technologies INF, 3-4.2- Introduction to the information system. . (nd). 2-6.3- Parts of the computer and their functions. (nd). Nonprofit Technology Collaboration, 2-4. Retrieved from http://www.baylor.edu/business/mis/nonprofits/doc.php/192118.pdf6- Unit 1: Introduction to Computer Hardware and Software (nd). hardware and software1_11.docx, 4.7- Galvin, S. a. (1998). Hardware Protection Concepts. , 3.