Involvement of the lung causes shortness of breath or fatigue during physical activity. Many patients with scleroderma become less physically active because of musculoskeletal complaints or the fatiguing nature of the illness. Hence many will not be physically active enough to actually develop shortness of breath.
Computer hardware engineers research, design, develop, and test computer systems and components such as processors, circuit boards, memory devices, networks, and routers. These engineers discover new directions in computer hardware, which generate rapid advances in computer technology.
The work of electrical engineers and electronics engineers is similar. Both use engineering and design software and equipment to do engineering. Engineers whose jobs exclusively involve computer hardware are typically considered computer hardware engineers, but the industry also employs electrical engineers. The computer systems design industry employed 4,520 individuals in May 2012, according to the BLS, and they averaged $102,860 annually.