| Subject | English | Arabic |
| comp., MS | Double Data Rate Synchronous DRAM A type of SDRAM that supports data transfers on both edges of each clock cycle (the rising and falling edges), effectively doubling the memory chip's data throughput | ذاكرة DRAM متزامنة بضعف معدل نقل البيانات (DDR SDRAM) |
| comp., MS | synchronous data exchange | تبادل البيانات المتزامن (A style of processing where an application requests that an event occurs and waits for the event to complete, so that the application is certain of the result of its request before it proceeds) |
| telegr. | synchronous data network | شبكة بيانات متزامنة |
| telegr. | synchronous data transmission | إرسال بيانات متزامنة |