193 C1 301 11000001 209 D1 321 11010001 225 E1 341 11100001 241 F1 361 11110001 194 C2 302 11000010 210 D2 322 11010010 226 E2 342 11100010 242 F2 362 11110010 195 C3 303 11000011 211 D3 323 11010011 227 E3 343 11100011 243 F3 363 11110011 196 C4 304 11000100 212 D4 324 11010100 228 E4 344 11100100 244 F4 364 11110100 197 C5 305 11000101 213 D5 325 11010101 229 E5 345 11100101 245 F5 365 11110101 198 C6 306 11000110 214 D6 326 11010110 230 E6 346 11100110 246 F6 366 11110110 199 C7 307 11000111 215 D7 327 11010111 231 E7 347 11100111 247 F7 367 11110111 200 C8 310 11001000 216 D8 330 11011000 232 E8 350 11101000 248 F8 370 11111000 201 C9 311 11001001 217 D9 331 11011001 233 E9 351 11101001 249 F9 371 11111001
memory that holds the next instruction to be executed. The IR is the instruction register. When the CPU fetches a program instruction from main memory, this is where it puts it. The COUNT register counts off the steps in a fetch-and-execute cycle. It takes the CPU several steps to fetch and execute an instruction. Hierarhia pistikutest progekeelteni Esimene: programmeerimismeetod: kaablid ja pistikud Teine: von Neumanni arhitektuur, programm malus binaarkoodina:01011101 01001011 01010101 11010101 10101001 ....Lihtsam kirjutada hexas, ntx 4A FC 09 B2 .... Kolmas: Esmane progekeel: assembler. Uks masinakask: tuupiliselt uks rida assembleri-programmi Neljas: Harilik progekeel ehk nn korgkeel (fortran, basic, c, java,python jne jne).Harilikud valemid, if-then-else jne, a la x=2*y+sin(y); Kõrgkeeled on erineva abstraktsusastmega: Masinalähedane ja ebamugav: Fortran, C (portaabel assembler) Abstraktsem ja mugavam: Lisp, Ada, ML, Java, Python,
It takes the CPU several steps to fetch and execute an instruction. When COUNT is 1, it does step 1; when COUNT is 2, it does step 2; and so forth. Remember that as the COUNT register counts 0, 1, 2,..., just one machine language program is being executed Hierarhia pistikutest progekeelteni Esimene: programmeerimismeetod: kaablid ja pistikud Teine: von Neumanni arhitektuur, programm mälus binaarkoodina: 01011101 01001011 01010101 11010101 10101001 .... Lihtsam kirjutada hexas, ntx 4A FC 09 B2 .... Kolmas: Esmane progekeel: assembler. Üks masinakäsk: tüüpiliselt üks rida assembleriprogrammi Neljas: Harilik progekeel ehk nn kõrgkeel (fortran, basic, c, java, python jne jne). Harilikud valemid, if-then-else jne, a la x=2*y+sin(y); Ecki assembler This program counts. It starts by putting the number 1 into memory location 12, and
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