Shares of Intel dropped about 23 percent after the company issued a bleak outlook for the computer market. A slowdown in demand for PCs and a negative forecast for future sales were cited as primary reasons. The firm also reported a shortage of memory chips and rising costs for components, which have squeezed margins on laptops and desktop computers. Those pressures have reduced sales of both portable and stationary systems. Intel expects the difficulties to continue through at least 2027. Analysts noted that the stock reaction reflects investor concern over the prolonged market weakness.