low-level

• assembly languages
• low level language- designed to be next to the hardware
• machine code is

   a low-level programming language consisting of binary digits (0s and 1s) that directly represents the instructions a computer's CPU can understand and execute. 
• ASEMBLY LANGUAGE need to be compiled/translated into machine code
• RAM -volatile-short term loses data

  ROM- non-volatile-long term doesnt lose data
• ALU- Arithmetic Logic Unit, performs arithmetic and logic operations on data and control signals
• FETCH DECODE EXECUTE CYCLE: The fetch decode execute cycle is the basic cycle of the CPU.
• CU controls the compounds within the CPU
• PURPOSE OF A BUS- TRANSFERS DATA TO OTHER COMPONENTS IN THE CPU
• PURPOSE OF PC REGESTERS-holds memory address of the instruction to be executed
• primary storage-

  main memory-RAM

  directly accessible by CPU

  cashe

  voiltile
• seconday storaage

  SSD,DVD,USB

  NON-VOLITLE LONG TERM
• STORAGE THAT USES READ AND WITE DATA

  -OPTICAL DISK
• HARDWARE

  physical components of a computer
• compiler- translates the entre source code before executes the code

  errors are shown at the end
• interpreter

  translates the source code into machine code and executes it-line by line

  errors encountered as it runs and stop program
• software systems controls / manages hardware allowing application software to apperate